APA (7th ed.) Citation

(1977). A geography of Europe: Problems and prospects (4. ed.). Ronald Pr.

Chicago Style (17th ed.) Citation

A Geography of Europe: Problems and Prospects. 4. ed. New York: Ronald Pr, 1977.

MLA (9th ed.) Citation

A Geography of Europe: Problems and Prospects. 4. ed. Ronald Pr, 1977.