Gaya APA
Pepper, Stephen C. (1970).
The Sources of value (Cet.1).
London:
Univ. of California Press.
Gaya Chicago
Pepper, Stephen C.
The Sources of value.
Cet.1
London:
Univ. of California Press,
1970.
Text.
Gaya MLA
Pepper, Stephen C.
The Sources of value.
Cet.1
London:
Univ. of California Press,
1970.
Text.
Gaya Turabian
Pepper, Stephen C.
The Sources of value.
Cet.1
London:
Univ. of California Press,
1970.
Print.