APA (7th ed.) Citation

Bayer, M. B. (1971). Changes in the genus Haworthia Duval ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Bayer, Martin B. Changes in the Genus Haworthia Duval. [Sonderdr.]. 1971.

MLA (9th ed.) Citation

Bayer, Martin B. Changes in the Genus Haworthia Duval. [Sonderdr.]. 1971.

Warning: These citations may not always be 100% accurate.