Gaya APA

Mackie, D, L., Decker, D, K. (1981). Group And IPA HMOS (Firth). Rockville: An Aspen Publication.

Gaya MLA

Mackie, Dustin, L., Decker, Douglas, K.. "Group And IPA HMOS". Firth Rockville: An Aspen Publication, 1981. Text.