APA (7th ed.) Citation

Ireland, R. R. (1969). A taxonomic revision of the genus Plagiothecium for North America, north of Mexico.

Chicago Style (17th ed.) Citation

Ireland, Robert R. A Taxonomic Revision of the Genus Plagiothecium for North America, North of Mexico. 1969.

MLA (9th ed.) Citation

Ireland, Robert R. A Taxonomic Revision of the Genus Plagiothecium for North America, North of Mexico. 1969.

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