Dyfyniad APA

Collis, M. (1974). Tackling problems part 1: A unit for teachers. Macdonald Educational.

Dyfyniad Arddull Chicago

Collis, Margaret. Tackling Problems Part 1: A Unit for Teachers. London: Macdonald Educational, 1974.

Dyfyniad MLA

Collis, Margaret. Tackling Problems Part 1: A Unit for Teachers. Macdonald Educational, 1974.

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