Bengtson, N. A., & Van Royen, W. (1964). Fundamentals of economic geography: An introduction to the study of resources. Prentice-Hall.
Citazione stile Chigago Style (17a edizione)Bengtson, N. A., e William Van Royen. Fundamentals of Economic Geography: An Introduction to the Study of Resources. Englewood Cliffs, NJ: Prentice-Hall, 1964.
Citatione MLA (9a ed.)Bengtson, N. A., e William Van Royen. Fundamentals of Economic Geography: An Introduction to the Study of Resources. Prentice-Hall, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.