Cita APA (7th ed.)

Keller, C. (2000). Understanding MA27 - A Numerical Example. Unspecified.

Cita Chicago (17th ed.)

Keller, C. Understanding MA27 - A Numerical Example. Unspecified, 2000.

Cita MLA (9th ed.)

Keller, C. Understanding MA27 - A Numerical Example. Unspecified, 2000.

Atenció: Aquestes cites poden no estar 100% correctes.