Cita APA (7a ed.)

BERNTHAL, M. S. (2009). BARNEY'S BOOK OF SHAPES.

Cita Chicago Style (17a ed.)

BERNTHAL, MARK. S. BARNEY'S BOOK OF SHAPES. 2009.

Cita MLA (9a ed.)

BERNTHAL, MARK. S. BARNEY'S BOOK OF SHAPES. 2009.