Dyfyniad APA

Johnston, R. J., Gregory, D., & Smith, D. M. (1986). The dictionary of human geography (2nd ed.). Blackwell Reference.

Dyfyniad Arddull Chicago

Johnston, Ronald John, Derek Gregory, and David M. Smith. The Dictionary of Human Geography. 2nd ed. Oxford: Blackwell Reference, 1986.

Dyfyniad MLA

Johnston, Ronald John, et al. The Dictionary of Human Geography. 2nd ed. Blackwell Reference, 1986.

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