APA (7th ed.) Citation

Krassilov, V. A. (1997). Angiosperm origins: Morphological and ecological aspects. PENSOFT.

Chicago Style (17th ed.) Citation

Krassilov, Valentin A. Angiosperm Origins: Morphological and Ecological Aspects. Sofia: PENSOFT, 1997.

MLA (9th ed.) Citation

Krassilov, Valentin A. Angiosperm Origins: Morphological and Ecological Aspects. PENSOFT, 1997.

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