Dyfyniad APA

Engelhardt, N. (1949). Planning secondary school building.

Dyfyniad Arddull Chicago

Engelhardt, Nl. Planning Secondary School Building. 1949.

Dyfyniad MLA

Engelhardt, Nl. Planning Secondary School Building. 1949.

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