APA Style

Cawley., G, E, S, J, F. (1987). 4The physician assistant in a changing health care environment (1st ed.). Rockville, Maryland, USA: Aspen Publishers.

MLA Style

Cawley., Gretchen, Engle, Schafft,, James, F.. "4The physician assistant in a changing health care environment". 1st ed. Rockville, Maryland, USA: Aspen Publishers, 1987. Text.