Cita APA (7th ed.)

Legget , R. . F., & Hatheway , A. W. (1988). Geology and engineering (3rd ed.). Mc Graw Hill.

Cita Chicago (17th ed.)

Legget , Robert F., i Allen W. Hatheway. Geology and Engineering. 3rd ed. New York: Mc Graw Hill, 1988.

Cita MLA (9th ed.)

Legget , Robert F., i Allen W. Hatheway. Geology and Engineering. 3rd ed. Mc Graw Hill, 1988.