APA (7th ed.) Citation

Ietswaart, J. H. (1980). A taxonomic revision of the genus Origanum (Labiatae). Leiden University Press.

Chicago Style (17th ed.) Citation

Ietswaart, J. H. A Taxonomic Revision of the Genus Origanum (Labiatae). The Hague ; Boston: Leiden University Press, 1980.

MLA (9th ed.) Citation

Ietswaart, J. H. A Taxonomic Revision of the Genus Origanum (Labiatae). Leiden University Press, 1980.