Dyfyniad APA

Downs, W. M., & Wright, L. A. (1998). Playwriting from formula to form. Harcout Brace College Publishers.

Dyfyniad Arddull Chicago

Downs, William Missouri, and Lou Anne Wright. Playwriting from Formula to Form. Fort Worth, TX: Harcout Brace College Publishers, 1998.

Dyfyniad MLA

Downs, William Missouri, and Lou Anne Wright. Playwriting from Formula to Form. Harcout Brace College Publishers, 1998.

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