APA (7e ed.) Bronvermelding

Federico. (2001). Messages from heaven. Immaculate Heart Creations.

Chicago (17e ed.) Bronvermelding

Federico. Messages from Heaven. Florida: Immaculate Heart Creations, 2001.

MLA (8e ed.) Bronvermelding

Federico. Messages from Heaven. Immaculate Heart Creations, 2001.