APA (7th ed.) Citation

Piens, E. J. M. (1996). Notocactus bibliography: 1905 - 1995. Selbstverl.

Chicago Style (17th ed.) Citation

Piens, Eric J. M. Notocactus Bibliography: 1905 - 1995. Merelbeke: Selbstverl, 1996.

MLA (9th ed.) Citation

Piens, Eric J. M. Notocactus Bibliography: 1905 - 1995. Selbstverl, 1996.

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