Dyfyniad APA

Blacker, R. (1970). Fifteen plus: School leavers and the outside world.

Dyfyniad Arddull Chicago

Blacker, Rosamunde. Fifteen Plus: School Leavers and the Outside World. 1970.

Dyfyniad MLA

Blacker, Rosamunde. Fifteen Plus: School Leavers and the Outside World. 1970.

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