reftex-arg-cite

reftex-arg-cite is an autoloaded Lisp function in `reftex-auc.el'.

(reftex-arg-cite OPTIONAL &optional PROMPT DEFINITION)

Use `reftex-citation' or AUCTeX's code to insert a cite-key macro argument.
What is being used depends upon `reftex-plug-into-AUCTeX'.