Cita APA (7th ed.)
Hawley, G. G. (1946). Seeing the invisible: The story of the electron microscope. Knopf.
Cita Chicago (17th ed.)
Hawley, Gessner G. Seeing the Invisible: The Story of the Electron Microscope. New York: Knopf, 1946.
Cita MLA (9th ed.)
Hawley, Gessner G. Seeing the Invisible: The Story of the Electron Microscope. Knopf, 1946.
Atenció: Aquestes cites poden no estar 100% correctes.