Bishop, M. A. (1993). Craterform origin derived by quantitative geomorphology. Zenodo.
Cita Chicago (17th ed.)Bishop, Mark A. Craterform Origin Derived by Quantitative Geomorphology. Zenodo, 1993.
Cita MLA (9th ed.)Bishop, Mark A. Craterform Origin Derived by Quantitative Geomorphology. Zenodo, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.