Directory of geoscience libraries, U.S. and Canada /
compiled by editor Nancy L. Crossfield ... [et al.].

APA Citation

Crossfield, N. L., Walker, R. D. (Richard Dean)., Geoscience Information Society. (1986). Directory of geoscience libraries, U.S. and Canada. 3rd ed. Alexandria, VA: Geoscience Information Society.

MLA Citation

Crossfield, Nancy L, Richard D. (Richard Dean) Walker, and Geoscience Information Society. Directory of Geoscience Libraries, U.S. And Canada. 3rd ed. Alexandria, VA: Geoscience Information Society, 1986.

Warning: These citations may not always be complete (especially for serials).