APA (7th ed.) Citation

Watkins, A. (1906). The Watkins manual of exposure & development (3rd ed.). Watkins [u.a.].

Chicago Style (17th ed.) Citation

Watkins, Alfred. The Watkins Manual of Exposure & Development. 3rd ed. Hereford: Watkins [u.a.], 1906.

MLA (9th ed.) Citation

Watkins, Alfred. The Watkins Manual of Exposure & Development. 3rd ed. Watkins [u.a.], 1906.

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