DAVIS BARBARA. (2019). MINERALS, ROCK AND SOIL (2009 Ed.). RAINTREE PUBLISHERS.
Cita Chicago (17th ed.)DAVIS BARBARA. MINERALS, ROCK AND SOIL. 2009 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
Cita MLA (9th ed.)DAVIS BARBARA. MINERALS, ROCK AND SOIL. 2009 Ed. RAINTREE PUBLISHERS, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.