APA

The New York Botanical Garden, . (1993). Scientific monographs. New York (EE.UU,): The New York Botanical Garden.

Chicago

The New York Botanical Garden, . 1993. Scientific monographs. New York (EE.UU,): The New York Botanical Garden.

Harvard

The New York Botanical Garden, . (1993). Scientific monographs. New York (EE.UU,): The New York Botanical Garden.

MLA

The New York Botanical Garden, . Scientific monographs. New York (EE.UU,): The New York Botanical Garden. 1993.