APA (7th ed.) Citation

Goodspeed, T. H. (1939). Plant hunters in the Andes. Robert Hale Ltd.

Chicago Style (17th ed.) Citation

Goodspeed, T. Harper. Plant Hunters in the Andes. London, England, United Kingdom: Robert Hale Ltd, 1939.

MLA (9th ed.) Citation

Goodspeed, T. Harper. Plant Hunters in the Andes. Robert Hale Ltd, 1939.