One page. Absolutely always.
Name in big letters on the top
Immediately under that (before your address or phone number or anything else ) a highlighted box or bullet points or something with your hours summary :
- any targetted time appropriate to the employer (i.e. if it's a CV going to a bush operator and you've got some C206 time, or an Aztec rating for a bank runners job, then put that in first).
- P in C
- Multi
- Turbine / night / IFR time as appropriate (don't bother if you've only got 3 hours turbine or something)
- Total time
That is the most important thing because that's as far as most chief pilots will ever read. If they're interested then they'll read the rest of the CV below, which can contain in any particular order
Your personal details : address / phone number / email / marital status etc etc.
Qualifications : list of your relevant licences, type ratings, multi crew qualifications, first aid certificates etc etc. Don't list your correspondence course in bovine artificial insemination or your grade 5 in classical piano or anything else that isn't aviation related. (you might laugh but people actually do it - honestly).
RELEVANT employment history. If it's your first job then yeah working in ops or plane washing or something counts as relevant experience. No GA operator wants to read a 20 line paragraph about all the great decision making skills you gained assembling hamburgers.
Training history : where you trained and did you finish high school is really all they want to know. The one-page CV is not the place to make a huge great list of every single 98% pass mark you got in your ATPLs.
Referees (Not a bad idea, but only if they are genuinely experienced and respectable aviators who are happy to talk it up on the phone for you. if you know anyone who's a captain - or even better a training captain - at a decent airline who's willing to be a referee for you, then fill your boots. If you don't know anyone like that then it's better just to put nothing, don't put your old Mcdonalds shift manager as a referee cos it makes you look like a muppet).
And that's IT. Less is more when it comes to cold selling the CV's.