Cita APA (7th ed.)

Matthews, W. H. I. 1., Roy, C. J., Stevenson, R. E., & Harris, M. F. (1987). Investigating the earth. Houghton Mifflin.

Cita Chicago (17th ed.)

Matthews, William H. III. 119-1991, Chalmer J. Roy, Robert E. Stevenson, i Miles F. Harris. Investigating the Earth. Boston: Houghton Mifflin, 1987.

Cita MLA (9th ed.)

Matthews, William H. III. 119-1991, et al. Investigating the Earth. Houghton Mifflin, 1987.