Dyfyniad APA

Rogers, A., & Viles, H. A. (2003). The student's companion to geography (Second edition.). Blackwell Publishers.

Dyfyniad Arddull Chicago

Rogers, Alisdair, and Heather A. Viles. The Student's Companion to Geography. Second edition. Malden, MA: Blackwell Publishers, 2003.

Dyfyniad MLA

Rogers, Alisdair, and Heather A. Viles. The Student's Companion to Geography. Second edition. Blackwell Publishers, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.