APA (7th ed.) Citation

Stebbins, G. L., Valencia, J. I., & Valencia, R. M. (1946). Artifical and natural hybrids in the Gramineae, Tribe Hordeae ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Stebbins, George Ledyard, J. I. Valencia, and R. Marie Valencia. Artifical and Natural Hybrids in the Gramineae, Tribe Hordeae. [Sonderdr.]. 1946.

MLA (9th ed.) Citation

Stebbins, George Ledyard, et al. Artifical and Natural Hybrids in the Gramineae, Tribe Hordeae. [Sonderdr.]. 1946.