APA (7th ed.) Citation

Pinchot, G. (1923). Talks on forestry. [publisher not identified].

Chicago Style (17th ed.) Citation

Pinchot, Gifford. Talks on Forestry. [Harrisburg, Pa.]: [publisher not identified], 1923.

MLA (9th ed.) Citation

Pinchot, Gifford. Talks on Forestry. [publisher not identified], 1923.