APA-referens (7:e uppl.)

DAVIS BARBARA. (2019). MINERALS, ROCK AND SOIL (2009 Ed.). RAINTREE PUBLISHERS.

Chicago-referens (17:e uppl.)

DAVIS BARBARA. MINERALS, ROCK AND SOIL. 2009 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.

MLA-referens (9:e uppl.)

DAVIS BARBARA. MINERALS, ROCK AND SOIL. 2009 Ed. RAINTREE PUBLISHERS, 2019.