A flora of North America :containing abridged descriptions of all the known indigenous and naturalized plants growing north of Mexico, arranged according to the natural system /by John Torrey and Asa Gray.

MLA

Torrey, John, and Asa Gray. A Flora of North America :Containing Abridged Descriptions of All the Known Indigenous and Naturalized Plants Growing North of Mexico, Arranged According to the Natural System /by John Torrey and Asa Gray. Wiley & Putnam, 1838. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsbhl&AN=edsbhl.title.9466&authtype=sso&custid=ns315887.

APA

Torrey, J., & Gray, A. (1838). A flora of North America :containing abridged descriptions of all the known indigenous and naturalized plants growing north of Mexico, arranged according to the natural system /by John Torrey and Asa Gray. Wiley & Putnam.

Chicago

Torrey, John, and Asa Gray. 1838. A Flora of North America :Containing Abridged Descriptions of All the Known Indigenous and Naturalized Plants Growing North of Mexico, Arranged According to the Natural System /by John Torrey and Asa Gray. New York: Wiley & Putnam. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsbhl&AN=edsbhl.title.9466&authtype=sso&custid=ns315887.