APA (7th ed.) Citation

Schwartz, J. S. (1980). Three unpublished letters to Charles Darwin: The solution to a 'geometrico-geological' problem.

Chicago Style (17th ed.) Citation

Schwartz, Joel S. Three Unpublished Letters to Charles Darwin: The Solution to a 'Geometrico-geological' Problem. 1980.

MLA (9th ed.) Citation

Schwartz, Joel S. Three Unpublished Letters to Charles Darwin: The Solution to a 'Geometrico-geological' Problem. 1980.

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