APA استشهاد

Sandford, C., & Vaish, M. B. (1971). Principles of economics. The Macmillan press limited.

استشهاد بنمط شيكاغو

Sandford, C.T, و M.C. Bradbury Vaish. Principles of Economics. London: The Macmillan press limited, 1971.

MLA استشهاد

Sandford, C.T, و M.C. Bradbury Vaish. Principles of Economics. The Macmillan press limited, 1971.