एपीए उद्धरण

Ruska, E. (1980). The early development of electron lenses and electron microscopy. Hirzel.

शिकागो स्टाइल उद्धरण

Ruska, Ernst. The Early Development of Electron Lenses and Electron Microscopy. Stuttgart: Hirzel, 1980.

एमएलए उद्धरण

Ruska, Ernst. The Early Development of Electron Lenses and Electron Microscopy. Hirzel, 1980.