Photography, its principles and applications /
by Alfred Watkins.

APA Citation

Watkins, A. (1927). Photography, its principles and applications. 3d ed., rev. London: Constable.

MLA Citation

Watkins, Alfred, 1855-1935. Photography, Its Principles And Applications. 3d ed., rev. London: Constable, 1927.

Warning: These citations may not always be complete (especially for serials).