Gaya APA

Dewey, M. et al (1989). Dewey Decimal Classification and Relative Index Edition 20 Volume 3 600-999 (Ed.20). New York: Forest Press.

Gaya MLA

Dewey, Meivil. et al. "Dewey Decimal Classification and Relative Index Edition 20 Volume 3 600-999". Ed.20 New York: Forest Press, 1989. Text.