APA (7th ed.) Citation

Costa,Otto De. (1989). Word Fun (NA.). Better Yourself Book.

Chicago Style (17th ed.) Citation

Costa,Otto De. Word Fun. NA. Bombay: Better Yourself Book, 1989.

MLA (9th ed.) Citation

Costa,Otto De. Word Fun. NA. Better Yourself Book, 1989.

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