APA (7th ed.) Citation

Langstaff, C. S., & Morrill, D. (1981). Geologic cross sections. International Human Resources Development Corp..

Chicago Style (17th ed.) Citation

Langstaff, Cynthia Shauer, and David Morrill. Geologic Cross Sections. Boston: International Human Resources Development Corp., 1981.

MLA (9th ed.) Citation

Langstaff, Cynthia Shauer, and David Morrill. Geologic Cross Sections. International Human Resources Development Corp., 1981.