Encyclopedia of diet :
a treatise on the food question ... /
by Eugene Christian.

APA Citation

Christian, E., Corrective Eating Society. (1914). Encyclopedia of diet: a treatise on the food question .... New York: Corrective Eating Society.

MLA Citation

Christian, Eugene, 1860-1930, and Corrective Eating Society. Encyclopedia of Diet: a Treatise On the Food Question .... New York: Corrective Eating Society, 1914.

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