Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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