APA (7th ed.) Citation

Widiastuti, H., & Suyatno. (2007). Panduan sertifikasi guru. Indeks.

Chicago Style (17th ed.) Citation

Widiastuti, Hartati, and Suyatno. Panduan Sertifikasi Guru. Indeks, 2007.

MLA (8th ed.) Citation

Widiastuti, Hartati, and Suyatno. Panduan Sertifikasi Guru. Indeks, 2007.

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