APA

Raven P. H., Evert R. F. & Curtis H. (1976). Biology of plants. New Work: Worth Publishers.

Chicago

Raven Peter H, Evert Ray Franklin and Curtis Helena. 1976. Biology of plants. New Work: Worth Publishers.

Harvard

Raven P. H., Evert R. F. and Curtis H. (1976). Biology of plants. New Work: Worth Publishers.

MLA

Raven Peter H, Evert Ray Franklin and Curtis Helena. Biology of plants. New Work: Worth Publishers. 1976.