Cita APA (7th ed.)

Beiser, A. (1975). Introduction to earth science. McGraw-Hill.

Cita Chicago (17th ed.)

Beiser, Arthur. Introduction to Earth Science. New York: McGraw-Hill, 1975.

Cita MLA (9th ed.)

Beiser, Arthur. Introduction to Earth Science. McGraw-Hill, 1975.

Atenció: Aquestes cites poden no estar 100% correctes.