APA

Porcelain Enamel Institute. Annual Forum (3rd: 1938 O., Proceedings of the Third Annual Forum of the Porcelain Enamel Institute, . (1939). Proceedings of the Third Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Washngton, D. C.

Chicago

Porcelain Enamel Institute. Annual Forum (3rd: 1938 Oct, Proceedings of the Third Annual Forum of the Porcelain Enamel Institute, . 1939. Proceedings of the Third Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Washngton, D. C.

Harvard

Porcelain Enamel Institute. Annual Forum (3rd: 1938 O., Proceedings of the Third Annual Forum of the Porcelain Enamel Institute, . (1939). Proceedings of the Third Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Washngton, D. C.

MLA

Porcelain Enamel Institute. Annual Forum (3rd: 1938 Oct, Proceedings of the Third Annual Forum of the Porcelain Enamel Institute, . Proceedings of the Third Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Washngton, D. C. 1939.