APA (7th ed.) Citation

Core, E. L. (1955). Plant taxonomy. [publisher not identified].

Chicago Style (17th ed.) Citation

Core, Earl Lemley. Plant Taxonomy. Englewood Cliffs [N.J.]: [publisher not identified], 1955.

MLA (9th ed.) Citation

Core, Earl Lemley. Plant Taxonomy. [publisher not identified], 1955.