Dyfyniad APA

Dennis , N., & NTM Dennis and T A Heppell. (1968). Vacuum System Desing. Chapaman and Hall.

Dyfyniad Arddull Chicago

Dennis , NTM, and NTM Dennis and T A Heppell. Vacuum System Desing. London: Chapaman and Hall, 1968.

Dyfyniad MLA

Dennis , NTM, and NTM Dennis and T A Heppell. Vacuum System Desing. Chapaman and Hall, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.