Παραπομπή σε μορφή APA (7η εκδ.)

ALLEN ROBERT G. (2006). CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. FREE PRESS.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ALLEN ROBERT G. CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. NEW YORK: FREE PRESS, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

ALLEN ROBERT G. CREATING WEALTH: RETIRE IN TEN YEARS USING ALLEN`S SEVEN PRINCIPLES OF WEALTH. FREE PRESS, 2006.