Powell, W., & Kusuma-Powell, O. (2011). How to teach now: Five keys to personalized learning in the global classroom. ASCD.
Chicago-viite (17. p.)Powell, William, ja Ochan Kusuma-Powell. How to Teach Now: Five Keys to Personalized Learning in the Global Classroom. Alexandria, Va.: ASCD, 2011.
MLA-viite (9. p.)Powell, William, ja Ochan Kusuma-Powell. How to Teach Now: Five Keys to Personalized Learning in the Global Classroom. ASCD, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.