Citazione Stile APA (7a Edizione)

Wooldridge , . S., & East, W. . G. (1951). The spirit and purpose of geography. Hutchinson.

Citazione stile Chigago Style (17a edizione)

Wooldridge , S.W, e W. Gordon East. The Spirit and Purpose of Geography. London,: Hutchinson, 1951.

Citatione MLA (9a ed.)

Wooldridge , S.W, e W. Gordon East. The Spirit and Purpose of Geography. Hutchinson, 1951.