APA ציטוט

(1961). Economic areas of the United States / [by] Donald J. Bogue and Calvin L. Beale.

Chicago Style (17th ed.) Citation

Economic Areas of the United States / [by] Donald J. Bogue and Calvin L. Beale. 1961.

ציטוט MLA

Economic Areas of the United States / [by] Donald J. Bogue and Calvin L. Beale. 1961.