Dyfyniad APA

Ackland, D., & Freeburg, J. (1989). Insight guides: Texas /Diana Ackland and Jamie Freeburg. APA Pub.

Dyfyniad Arddull Chicago

Ackland, Diana, and Jamie Freeburg. Insight Guides: Texas /Diana Ackland and Jamie Freeburg. Singapore: APA Pub, 1989.

Dyfyniad MLA

Ackland, Diana, and Jamie Freeburg. Insight Guides: Texas /Diana Ackland and Jamie Freeburg. APA Pub, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.