APA (7th ed.) Citation

Shively, J. M., & Barton, L. L. (1991). Variations in autotrophic life. Academic.

Chicago Style (17th ed.) Citation

Shively, Jessup M., and Larry L. Barton. Variations in Autotrophic Life. London; San Diego: Academic, 1991.

MLA (9th ed.) Citation

Shively, Jessup M., and Larry L. Barton. Variations in Autotrophic Life. Academic, 1991.