Gaya APA

L.Mackie, D., K.Decker, D. (1981). Group and IPA HMOs (Ed. 1). London: Aspen systems corporation rockville.

Gaya MLA

L.Mackie, Dustin., K.Decker, Doulas. "Group and IPA HMOs". Ed. 1 London: Aspen systems corporation rockville, 1981. Text.