Cita APA (7th ed.)
Thurber, W. A. (1968). Exploring earth science. Allyn and Bacon.
Cita Chicago (17th ed.)
Thurber, Walter A. Exploring Earth Science. Boston: Allyn and Bacon, 1968.
Cita MLA (9th ed.)
Thurber, Walter A. Exploring Earth Science. Allyn and Bacon, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.