APA (7th ed.) Citation

Gunther, A. (1962). Microphotography in the library. UNESCO.

Chicago Style (17th ed.) Citation

Gunther, Alfred. Microphotography in the Library. UNESCO, 1962.

MLA (9th ed.) Citation

Gunther, Alfred. Microphotography in the Library. UNESCO, 1962.

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