Cita APA (7a ed.)

Bengtson, N. A., & Royen, W. v. (1959). Fundamentals of economic geography (4th. ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Bengtson, Nels A., y William van Royen. Fundamentals of Economic Geography. 4th. ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1959.

Cita MLA (9a ed.)

Bengtson, Nels A., y William van Royen. Fundamentals of Economic Geography. 4th. ed. Prentice-Hall, 1959.