Citazione APA

Arthur Getis, Judith Getis, & Jerome D Fellmann. (1996). Introduction to geography. W C B.

Stile di citazione Chicago

Arthur Getis, Judith Getis, e Jerome D Fellmann. Introduction to Geography. Dubuque: W C B, 1996.

Citazione MLA

Arthur Getis, et al. Introduction to Geography. W C B, 1996.