Cita APA (7a ed.)

Holtz, R. D., & Kovacs, W. D. (1981). An introduction to geotechnical engineering. Prentice Hall.

Cita Chicago Style (17a ed.)

Holtz, R. D., y William D. Kovacs. An Introduction to Geotechnical Engineering. Englewood Cliffs: Prentice Hall, 1981.

Cita MLA (9a ed.)

Holtz, R. D., y William D. Kovacs. An Introduction to Geotechnical Engineering. Prentice Hall, 1981.