According to DOC4444:
b) JOIN [(direction of circuit)] (position in circuit) (runway number) [SURFACE] WIND (direction and speed) (units) [TEMPERATURE [MINUS] (number)] QNH (or QFE) (number) [(units)] [TRAFFIC (detail)];
According to DOC9432
4.6.1 Requests for instructions to join the traffic circuit should be made in sufficient time to allow for a planned entry into the circuit taking other traffic into account. When the traffic circuit is in a right-hand pattern this should be specified. A left-hand pattern need not be specified although it may be advisable to do so if there has been a recent change where the circuit direction is variable.
Further:
"G-CD JOIN RIGHT HAND DOWNWIND RUNWAY 34 WIND 330 DEGREES 10 KNOTS QNH 1012"
So to sum it up, DOC444 and 9432 does not seem to consider a published right hand circuit, and how to act in that case.