Cita APA (7th ed.)
Fassett, J. E., & Rigby, J. K. (1987). The Cretaceous-Tertiary Boundary in the San Juan and Raton Basins, New Mexico and Colorado. Geological Society of America.
Cita Chicago (17th ed.)
Fassett, James E., i J. Keith Rigby. The Cretaceous-Tertiary Boundary in the San Juan and Raton Basins, New Mexico and Colorado. Boulder, Colo: Geological Society of America, 1987.
Cita MLA (9th ed.)
Fassett, James E., i J. Keith Rigby. The Cretaceous-Tertiary Boundary in the San Juan and Raton Basins, New Mexico and Colorado. Geological Society of America, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.