Cita APA (7th ed.)

Gopalkrishnan , R. (2010). When The Penny Drops: Learning What Not Taught. Penguin.

Cita Chicago (17th ed.)

Gopalkrishnan , R. When The Penny Drops: Learning What Not Taught. Delhi: Penguin, 2010.

Cita MLA (9th ed.)

Gopalkrishnan , R. When The Penny Drops: Learning What Not Taught. Penguin, 2010.