Cita APA (7th ed.)

WHEELER, J. O., & MULLER, P. O. (1981). Economy geography. John Wiley and Sons.

Cita Chicago (17th ed.)

WHEELER, James O., i Peter O. MULLER. Economy Geography. New York: John Wiley and Sons, 1981.

Cita MLA (9th ed.)

WHEELER, James O., i Peter O. MULLER. Economy Geography. John Wiley and Sons, 1981.