APA (7th ed.) Citation

Walters, M. S. (1946). Karyotype evolution: A cytogenic study of seven species and six interspecific hybrids of Crepis. University of California press.

Chicago Style (17th ed.) Citation

Walters, Marta Sherman. Karyotype Evolution: A Cytogenic Study of Seven Species and Six Interspecific Hybrids of Crepis. Berkeley: University of California press, 1946.

MLA (9th ed.) Citation

Walters, Marta Sherman. Karyotype Evolution: A Cytogenic Study of Seven Species and Six Interspecific Hybrids of Crepis. University of California press, 1946.