APA (7th ed.) Citation

Krukoff, B. A., & Barneby, R. C. (1965). Supplementary notes on the American species of Strychnos. New York Botanical Garden.

Chicago Style (17th ed.) Citation

Krukoff, B. A., and Rupert C. Barneby. Supplementary Notes on the American Species of Strychnos. Bronx, N.Y: New York Botanical Garden, 1965.

MLA (9th ed.) Citation

Krukoff, B. A., and Rupert C. Barneby. Supplementary Notes on the American Species of Strychnos. New York Botanical Garden, 1965.