Cita APA (7a ed.)

Milner, J. (1840). The key of heaven or A manual of prayer, to which are now added an abridgement of the Christian doctrine, the acts of faith, hope, and charity, and prayer before Mass. Thomas Richardson and Son.

Cita Chicago Style (17a ed.)

Milner, John. The Key of Heaven or A Manual of Prayer, to Which Are Now Added an Abridgement of the Christian Doctrine, the Acts of Faith, Hope, and Charity, and Prayer Before Mass. Dublin [etc.]: Thomas Richardson and Son, 1840.

Cita MLA (9a ed.)

Milner, John. The Key of Heaven or A Manual of Prayer, to Which Are Now Added an Abridgement of the Christian Doctrine, the Acts of Faith, Hope, and Charity, and Prayer Before Mass. Thomas Richardson and Son, 1840.