Dyfyniad APA
Thomas, P. J., Hicks, R. D., Chyba, C. F., & McKay, C. P. (2006). Comets and the Origin and Evolution of Life. Springer Berlin Heidelberg. https://doi.org/10.1007/10903490
Dyfyniad Arddull Chicago
Thomas, Paul J., Roland Dean Hicks, Christopher F. Chyba, and Christopher P. McKay. Comets and the Origin and Evolution of Life. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. https://doi.org/10.1007/10903490.
Dyfyniad MLA
Thomas, Paul J., et al. Comets and the Origin and Evolution of Life. Springer Berlin Heidelberg, 2006. https://doi.org/10.1007/10903490.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.