APA (7th ed.) Citation

Lack, H. W. (1979). The genusPicris (Asteraceae, Lactuceae) in Tropical Africa. Springer.

Chicago Style (17th ed.) Citation

Lack, H. Walter. The GenusPicris (Asteraceae, Lactuceae) in Tropical Africa. Springer, 1979.

MLA (9th ed.) Citation

Lack, H. Walter. The GenusPicris (Asteraceae, Lactuceae) in Tropical Africa. Springer, 1979.

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