Cita APA (7th ed.)

Covington, G. A., & Hannah, B. Access by design.

Cita Chicago (17th ed.)

Covington, George A., i Bruce Hannah. Access by Design.

Cita MLA (8th ed.)

Covington, George A., i Bruce Hannah. Access by Design.

Atenció: Aquestes cites poden no estar 100% correctes.