APA (7th ed.) Citation

Crescent Educational Services. A joy to learn English series. [s.n.].

Chicago Style (17th ed.) Citation

Crescent Educational Services. A Joy to Learn English Series. [s.l.]: [s.n.].

MLA (9th ed.) Citation

Crescent Educational Services. A Joy to Learn English Series. [s.n.].

Warning: These citations may not always be 100% accurate.