Dyfyniad APA

Boone, C. G., & Modarres , A. (2006). City and environment. Dorling Kindersley,Pearson Education.

Dyfyniad Arddull Chicago

Boone, Christopher G., and Ali Modarres. City and Environment. New Delhi: Dorling Kindersley,Pearson Education, 2006.

Dyfyniad MLA

Boone, Christopher G., and Ali Modarres. City and Environment. Dorling Kindersley,Pearson Education, 2006.

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