Cita APA (7th ed.)

Welch, j. Winning: The Answers. harper Collins.

Cita Chicago (17th ed.)

Welch, jack. Winning: The Answers. harper Collins.

Cita MLA (9th ed.)

Welch, jack. Winning: The Answers. harper Collins.

Atenció: Aquestes cites poden no estar 100% correctes.