Citazione Stile APA (7a Edizione)

Jackson, . R. H., & Hudman, L. E. (1986). World regional geography : issues: For to-day (2nd ed.). John Wiley.

Citazione stile Chigago Style (17a edizione)

Jackson, Richard H., e Lioyd E. Hudman. World Regional Geography : Issues: For To-day. 2nd ed. New York: John Wiley, 1986.

Citatione MLA (9a ed.)

Jackson, Richard H., e Lioyd E. Hudman. World Regional Geography : Issues: For To-day. 2nd ed. John Wiley, 1986.