Dyfyniad APA

(1970). Pneumoconiosis; proceedings of the international conference, Johannesburg, 1969. Edited by H.A. Shapiro.

Dyfyniad Arddull Chicago

Pneumoconiosis; Proceedings of the International Conference, Johannesburg, 1969. Edited by H.A. Shapiro. 1970.

Dyfyniad MLA

Pneumoconiosis; Proceedings of the International Conference, Johannesburg, 1969. Edited by H.A. Shapiro. 1970.

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