APA (7th ed.) Citation

Não informado. (1926). Rocks and Minerals. Heldref Publications.

Chicago Style (17th ed.) Citation

Não informado. Rocks and Minerals. Washington: Heldref Publications, 1926.

MLA (8th ed.) Citation

Não informado. Rocks and Minerals. Heldref Publications, 1926.

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