Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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