APA-referens (7:e uppl.)

Crosby, W. O. (1886). Geological collections: Mineralogy. The Society.

Chicago-referens (17:e uppl.)

Crosby, William Otis. Geological Collections: Mineralogy. Boston, Mass.: The Society, 1886.

MLA-referens (8:e uppl.)

Crosby, William Otis. Geological Collections: Mineralogy. The Society, 1886.