Cita APA (7a ed.)
Anderson, J. K., & Coffin, H. G. (1977). Fossils in focus. Zondervan Pub. House.
Cita Chicago Style (17a ed.)
Anderson, J. Kerby, y Harold G. Coffin. Fossils in Focus. Grand Rapids: Zondervan Pub. House, 1977.
Cita MLA (9a ed.)
Anderson, J. Kerby, y Harold G. Coffin. Fossils in Focus. Zondervan Pub. House, 1977.
Precaución: Estas citas no son 100% exactas.