APA استشهاد

Spradley, L. H. (1994). Surveying and navigation for geophysical exploration. International Human Resources Development Corporation.

استشهاد بنمط شيكاغو

Spradley, L. Harold. Surveying and Navigation for Geophysical Exploration. Boston: International Human Resources Development Corporation, 1994.

MLA استشهاد

Spradley, L. Harold. Surveying and Navigation for Geophysical Exploration. International Human Resources Development Corporation, 1994.