APA (7th ed.) Citation

Riana, D. (2008). Sembilan-sembilan ideas for Happy teens. ZIP BOOKS.

Chicago Style (17th ed.) Citation

Riana, Deny. Sembilan-sembilan Ideas for Happy Teens. ZIP BOOKS, 2008.

MLA (8th ed.) Citation

Riana, Deny. Sembilan-sembilan Ideas for Happy Teens. ZIP BOOKS, 2008.

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