Gaya APA

Zubaidah, S. (2012). Assessing 21st Century Skills a Guide to Evaluating Mastery and Authentic Learning . America: Corwin a sage Compny.

Gaya MLA

Zubaidah, Siti. "Assessing 21st Century Skills a Guide to Evaluating Mastery and Authentic Learning". America: Corwin a sage Compny, 2012. Buku PPS Pend. Biologi.