APA (7th ed.) Citation

Chisholm, G. G. (1980). Handbook of commercial geography: Entirely rewritten (20. ed., entirely rewritten.). Longman.

Chicago Style (17th ed.) Citation

Chisholm, George G. Handbook of Commercial Geography: Entirely Rewritten. 20. ed., entirely rewritten. London: Longman, 1980.

MLA (9th ed.) Citation

Chisholm, George G. Handbook of Commercial Geography: Entirely Rewritten. 20. ed., entirely rewritten. Longman, 1980.