Cita APA (7th ed.)

Spradley, L. H. (1985). Surveying and navigation for geophysical exploration. International Human Resources Development Corp.

Cita Chicago (17th ed.)

Spradley, L. Harold. Surveying and Navigation for Geophysical Exploration. Boston: International Human Resources Development Corp, 1985.

Cita MLA (9th ed.)

Spradley, L. Harold. Surveying and Navigation for Geophysical Exploration. International Human Resources Development Corp, 1985.