Gaya APA
Schumacher, E.
(1977).
A guide for the perplexed
(
Cet. 3)
.
New York:
Harper Colophon Books.
Gaya MLA
Schumacher, E.F..
"A guide for the perplexed".
Cet. 3
New York:
Harper Colophon Books,
1977.
Text.