APA Edition Citation

GrayPeter. (1968). The encyclopedia of the biological science (4th ed.). RienHolt.

Chicago Edition Citation

GrayPeter. The Encyclopedia of the Biological Science. 4th ed. RienHolt, 1968.

MLA Edition Citation

GrayPeter. The Encyclopedia of the Biological Science. 4th ed. RienHolt, 1968.

Warning: These citations may not always be 100% accurate.