Gaya APA

Parker, S, P. et al (1986). Grolier concise encyclopedia of science and technology vol. 6 (1th edition). Hong Kong: Grolier Internatioal, Inc.

Gaya MLA

Parker, Sybil, P.. et al. "Grolier concise encyclopedia of science and technology vol. 6". 1th edition Hong Kong: Grolier Internatioal, Inc, 1986. Text.