एपीए उद्धरण

Walstad, W. B., & William B. Walstad. Study guide for use with microeconomics. Boston: McGraw-Hill/Irwin.

शिकागो स्टाइल उद्धरण

Walstad, William B., और William B. Walstad. Study Guide for Use With Microeconomics. Boston: McGraw-Hill/Irwin.

एमएलए उद्धरण

Walstad, William B., और William B. Walstad. Study Guide for Use With Microeconomics. Boston: McGraw-Hill/Irwin.