Παραπομπή APA

Whittaker, A. (1985). Field geologist's training guide. International Human Resources Development Corporation.

Παραπομπή Chicago Style

Whittaker, Alun. Field Geologist's Training Guide. Boston: International Human Resources Development Corporation, 1985.

Παραπομπή MLA

Whittaker, Alun. Field Geologist's Training Guide. International Human Resources Development Corporation, 1985.