Introduction to the devout life.

MLA

Francis and Michael Day. Introduction to the devout life. London : J.M. Dent; New York : Dutton, [1961]

APA

Francis & Day, M. (1961). Introduction to the devout life. London : J.M. Dent; New York : Dutton.

Chicago

Francis and Michael Day. Introduction to the devout life. Translated by Michael Day. London : J.M. Dent; New York : Dutton, [1961]