APA (7th ed.) Citation

(1915). The Key of heaven: A manual of prayers and instructions for Catholics. J.B. Steinbrenner.

Chicago Style (17th ed.) Citation

The Key of Heaven: A Manual of Prayers and Instructions for Catholics. New York: J.B. Steinbrenner, 1915.

MLA (8th ed.) Citation

The Key of Heaven: A Manual of Prayers and Instructions for Catholics. J.B. Steinbrenner, 1915.