APA

Niles W. E., . (1970). Taxonomic investigations in the genera Perityle and Laphamia (Compositae). Bronx, New York: The New York Botanical Garden.

Chicago

Niles Wesley Everett, . 1970. Taxonomic investigations in the genera Perityle and Laphamia (Compositae). Bronx, New York: The New York Botanical Garden.

Harvard

Niles W. E., . (1970). Taxonomic investigations in the genera Perityle and Laphamia (Compositae). Bronx, New York: The New York Botanical Garden.

MLA

Niles Wesley Everett, . Taxonomic investigations in the genera Perityle and Laphamia (Compositae). Bronx, New York: The New York Botanical Garden. 1970.