APA (7th ed.) Citation

Biddulph, S., & Stomann, A. (1988). The secret of happy children (rev. ed.). Bay Books.

Chicago Style (17th ed.) Citation

Biddulph, Steve, and Allan Stomann. The Secret of Happy Children. rev. ed. Sydney: Bay Books, 1988.

MLA (9th ed.) Citation

Biddulph, Steve, and Allan Stomann. The Secret of Happy Children. rev. ed. Bay Books, 1988.