APA (7th ed.) Citation

Harrar, E. (1957). Houghs encyclopaedia of American woods. Robert Speller & Sons.

Chicago Style (17th ed.) Citation

Harrar, E.S. Houghs Encyclopaedia of American Woods. New York: Robert Speller & Sons, 1957.

MLA (9th ed.) Citation

Harrar, E.S. Houghs Encyclopaedia of American Woods. Robert Speller & Sons, 1957.

Warning: These citations may not always be 100% accurate.