Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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