APA

Butler G. M., . (1911). A pocket handbook of minerals. New York: J.Wiley.

Chicago

Butler G Montague, . 1911. A pocket handbook of minerals. New York: J.Wiley.

Harvard

Butler G. M., . (1911). A pocket handbook of minerals. New York: J.Wiley.

MLA

Butler G Montague, . A pocket handbook of minerals. New York: J.Wiley. 1911.