APA (7th ed.) Zitazioa

Christaller, W. (1966). Central places in Southern Germany. Prentice - Hall.

Chicago Style (17th ed.) Zitazioa

Christaller, Walter. Central Places in Southern Germany. Englewood .Cliffs N. J.: Prentice - Hall, 1966.

MLA (9th ed.) Zitazioa

Christaller, Walter. Central Places in Southern Germany. Prentice - Hall, 1966.