APA

Grear J. W., . (1978). A revision of the new world species of rhynchosia (leguminosae-faboideae). New York: The New York Botanical Garden.

Chicago

Grear John W, . 1978. A revision of the new world species of rhynchosia (leguminosae-faboideae). New York: The New York Botanical Garden.

Harvard

Grear J. W., . (1978). A revision of the new world species of rhynchosia (leguminosae-faboideae). New York: The New York Botanical Garden.

MLA

Grear John W, . A revision of the new world species of rhynchosia (leguminosae-faboideae). New York: The New York Botanical Garden. 1978.