APA (7th ed.) Citation

Biddulph, s. (2004). The Secret of Happy Children. PT. Gramedia Pustaka Utama.

Chicago Style (17th ed.) Citation

Biddulph, steve. The Secret of Happy Children. PT. Gramedia Pustaka Utama, 2004.

MLA (8th ed.) Citation

Biddulph, steve. The Secret of Happy Children. PT. Gramedia Pustaka Utama, 2004.

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