APA aipamena

Hoover,Edgar M. (1963). The location of economic activity. Mc Graw Hill Book Company Inc.

Chicago Style aipamena

Hoover,Edgar M. The Location of Economic Activity. New York: Mc Graw Hill Book Company Inc, 1963.

MLA aipamena

Hoover,Edgar M. The Location of Economic Activity. Mc Graw Hill Book Company Inc, 1963.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.