Gaya APA

Baumeister, Roy F., John Tierney. (2011). Rediscovering the Greatest Human Strength : Willpower (ed.1). USA: Penguin books.

Gaya Chicago

Baumeister, Roy F., John Tierney. Rediscovering the Greatest Human Strength : Willpower. ed.1 USA: Penguin books, 2011. .

Gaya MLA

Baumeister, Roy F., John Tierney. Rediscovering the Greatest Human Strength : Willpower. ed.1 USA: Penguin books, 2011. .

Gaya Turabian

Baumeister, Roy F., John Tierney. Rediscovering the Greatest Human Strength : Willpower. ed.1 USA: Penguin books, 2011. .