Gaya APA
O.S.A., D, X, B.
(1999).
Friendship And Society
.
Cambridge,England:
WM.B. Eerdmans Publishing Company.
Gaya MLA
O.S.A., Donald, X., Burt,.
"Friendship And Society".
Cambridge,England:
WM.B. Eerdmans Publishing Company,
1999.
Text.