APA
Porcelain Enamel Institute I. 1. M. 1. C., Proceedings on general enamelling, .Proceedings on general enamelling. : .
Chicago
Porcelain Enamel Institute Inc.( 1956 May 16 Chicago), Proceedings on general enamelling, .Proceedings on general enamelling. : .
Harvard
Porcelain Enamel Institute I. 1. M. 1. C., Proceedings on general enamelling, .Proceedings on general enamelling. : .
MLA
Porcelain Enamel Institute Inc.( 1956 May 16 Chicago), Proceedings on general enamelling, .: . .