APA (7th ed.) Citation

Sandford, A., & Bradbury. P. (1971). Principles Of Economics. Macmillan & co. Ltd.

Chicago Style (17th ed.) Citation

Sandford, A., and Bradbury. P. Principles Of Economics. London: Macmillan & co. Ltd, 1971.

MLA (9th ed.) Citation

Sandford, A., and Bradbury. P. Principles Of Economics. Macmillan & co. Ltd, 1971.