Gaya APA
Gibbard, M, S.
(1977).
Why pray? (3rd impr.). Cet.pertama 1970
.
London:
SCM Press.
Gaya MLA
Gibbard, Mark,, S.S.J.E..
"Why pray? (3rd impr.). Cet.pertama 1970 ".
London:
SCM Press,
1977.
Buku.