APA (7th ed.) Citation

Scagel, R. F. (1965). An evolutionary survey of the plant kingdom. Wadsworth.

Chicago Style (17th ed.) Citation

Scagel, Robert F. An Evolutionary Survey of the Plant Kingdom. Belmont, Calif: Wadsworth, 1965.

MLA (9th ed.) Citation

Scagel, Robert F. An Evolutionary Survey of the Plant Kingdom. Wadsworth, 1965.