APA-referens

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

Chicago-stil citat

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

MLA-referens

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