APA

Keyes F. P., . (1941). The grace of Guadalupe. New York: J. Messner, Inc.

Chicago

Keyes Frances Parkinson, . 1941. The grace of Guadalupe. New York: J. Messner, Inc.

Harvard

Keyes F. P., . (1941). The grace of Guadalupe. New York: J. Messner, Inc.

MLA

Keyes Frances Parkinson, . The grace of Guadalupe. New York: J. Messner, Inc. 1941.