APA (7th ed.) Citation

Robbins, W. W., & Ramaley, F. (1937). Plants useful to man (2d ed.). P. Blakiston's son & co., inc..

Chicago Style (17th ed.) Citation

Robbins, Wilfred William, and Francis Ramaley. Plants Useful to Man. 2d ed. Philadelphia: P. Blakiston's son & co., inc., 1937.

MLA (9th ed.) Citation

Robbins, Wilfred William, and Francis Ramaley. Plants Useful to Man. 2d ed. P. Blakiston's son & co., inc., 1937.