APA
Porcelain Enamel Institute. Annual Forum( 5th: 1940 O., Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute, . (1940). Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Chicago, Illinois.
Chicago
Porcelain Enamel Institute. Annual Forum( 5th: 1940 Oct, Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute, . 1940. Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Chicago, Illinois.
Harvard
Porcelain Enamel Institute. Annual Forum( 5th: 1940 O., Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute, . (1940). Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Chicago, Illinois.
MLA
Porcelain Enamel Institute. Annual Forum( 5th: 1940 Oct, Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute, . Proceedings of the Fifth Annual Forum of the Porcelain Enamel Institute. Porcelain Enamel Institute: Chicago, Illinois. 1940.