APA (7 वां संस्करण) प्रशस्ति पत्र

Richek, M. A. (1989). The world of words: Vocabulary for college students (2nd ed.). Houghton.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Richek, Margaret Ann. The World of Words: Vocabulary for College Students. 2nd ed. Boston: Houghton, 1989.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Richek, Margaret Ann. The World of Words: Vocabulary for College Students. 2nd ed. Houghton, 1989.