APA (7. basım) Alıntı

Nagel, R. (2004). UXL encyclopedia of landforms and other geologic features. UXL.

Chicago Style (17. basım) Atıf

Nagel, Rob. UXL Encyclopedia of Landforms and Other Geologic Features. Detroit: UXL, 2004.

MLA (9th ed.) Atıf

Nagel, Rob. UXL Encyclopedia of Landforms and Other Geologic Features. UXL, 2004.