APA (7th ed.) Citation

Goodspeed, T. H., Clausen, R. E., & Hayes Chipman, R. (1927). Interspecific hybridization in Nicotiana. Univ. of California Press.

Chicago Style (17th ed.) Citation

Goodspeed, Thomas Harper, Roy Elwood Clausen, and Ruth Hayes Chipman. Interspecific Hybridization in Nicotiana. Berkeley, Calif: Univ. of California Press, 1927.

MLA (9th ed.) Citation

Goodspeed, Thomas Harper, et al. Interspecific Hybridization in Nicotiana. Univ. of California Press, 1927.