APA (7th ed.) Citation

Schneider, J., & Schneider, J. (1973). Science in our world (4th ed.). Heath.

Chicago Style (17th ed.) Citation

Schneider, Jens., and Jens Schneider. Science in Our World. 4th ed. Lexington, Mass.: Heath, 1973.

MLA (9th ed.) Citation

Schneider, Jens., and Jens Schneider. Science in Our World. 4th ed. Heath, 1973.