APA Citation

Ehlers, N., & Knudsen, E. (1965). The precorneal film: Biomicroscopical, historical and chemical investigations. Copenhagen: [s.n.].

Chicago Style Citation

Ehlers, Niels, and Eva Knudsen. The Precorneal Film: Biomicroscopical, Historical and Chemical Investigations. Copenhagen: [s.n.], 1965.

MLA Citation

Ehlers, Niels, and Eva Knudsen. The Precorneal Film: Biomicroscopical, Historical and Chemical Investigations. Copenhagen: [s.n.], 1965.

Warning: These citations may not always be 100% accurate.