APA Citation

Sheeham, C. A., Penfield, G. T., & Morales, E. (1990). Costa Rican geologic basins lure wildcatters.

Chicago Style Citation

Sheeham, Cynthia A., Glen T. Penfield, and Emilia Morales. Costa Rican Geologic Basins Lure Wildcatters. 1990.

MLA Citation

Sheeham, Cynthia A., Glen T. Penfield, and Emilia Morales. Costa Rican Geologic Basins Lure Wildcatters. 1990.

Warning: These citations may not always be 100% accurate.