The secret of exposure,
edited by Frank R. Fraprie. 27th thousand, rev. and enl.

APA Citation

Fraprie, F. Roy. (1937). The secret of exposure. Boston, Mass.: American photographic publishing company.

MLA Citation

Fraprie, Frank Roy, 1874-1951. The Secret of Exposure. Boston, Mass.: American photographic publishing company, 1937.

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