APA (7th ed.) Citation

(2004). The genus Oenothera L. in Eastern Europe. W. Szafer Inst. of Botany, Polish Acad. of Sciences.

Chicago Style (17th ed.) Citation

The Genus Oenothera L. in Eastern Europe. Kraków: W. Szafer Inst. of Botany, Polish Acad. of Sciences, 2004.

MLA (9th ed.) Citation

The Genus Oenothera L. in Eastern Europe. W. Szafer Inst. of Botany, Polish Acad. of Sciences, 2004.

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