Παραπομπή APA

Leviton, R. (1995). Brain builders: A life long guide to sharper thinking, better memory and an age proof mind.

Παραπομπή Chicago Style

Leviton, Richard. Brain Builders: A Life Long Guide to Sharper Thinking, Better Memory and an Age Proof Mind. New Jersey, Prentice Hall, 1995.

Παραπομπή MLA

Leviton, Richard. Brain Builders: A Life Long Guide to Sharper Thinking, Better Memory and an Age Proof Mind. 1995.