Maybe I'm missing something in this discussion, but the Information Manual for the 1980 Cessna C172 N Skyhawk (for example) which I have on my bookshelf, gives tables in Section 5 (Performance) for Take-off and Landing distances based on Short Field Technique as specified in Section 4...??
Section 4 (Normal Procedures) goes on to give the techniques for short field and normal take-offs and landings.