Cita APA (7a ed.)

VENTRELLA.S.W. (2001). THE POWER OF POSITIVE THINKING. VERMILION.

Cita Chicago Style (17a ed.)

VENTRELLA.S.W. THE POWER OF POSITIVE THINKING. LONDON: VERMILION, 2001.

Cita MLA (9a ed.)

VENTRELLA.S.W. THE POWER OF POSITIVE THINKING. VERMILION, 2001.