APA-ийн эшлэл(7 дахь хэвлэлт)

ROYEN, W. V., & BENGTSON, N. A. (1964). Fundamentals of economic geography: An introduction tothe study of resources. Prentice-Hall.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ROYEN, William Van, ба Nels A. BENGTSON. Fundamentals of Economic Geography: An Introduction Tothe Study of Resources. Englewood Cliffs: Prentice-Hall, 1964.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ROYEN, William Van, ба Nels A. BENGTSON. Fundamentals of Economic Geography: An Introduction Tothe Study of Resources. Prentice-Hall, 1964.