Gaya APA

The Illustrared science and invention encyclopedia vol. 20 : Welding - zworykin - Historic inventions. (1983). USA: H.S.Stuttman Inc..

Gaya MLA

The Illustrared science and invention encyclopedia vol. 20 : Welding - zworykin - Historic inventions. 1th edition. USA: H.S.Stuttman Inc., 1983. Text.