APA ציטוט

Boyes,William, & Melvin, M. (2003). Principles of economics (NA.). Cengage Learning.

Chicago Style (17th ed.) Citation

Boyes,William, and Michael Melvin. Principles of Economics. NA. Australia: Cengage Learning, 2003.

ציטוט MLA

Boyes,William, and Michael Melvin. Principles of Economics. NA. Cengage Learning, 2003.