Paul VI, P. (2016). Gravissimum educationis [declaration on christian education on 28 October 1965]. Boletin Eclesiastico de Filipinas.
Chicago (17e ed.) BronvermeldingPaul VI, Pope. "Gravissimum Educationis [declaration on Christian Education on 28 October 1965]." Boletin Eclesiastico De Filipinas 2016.
MLA (9e ed.) BronvermeldingPaul VI, Pope. "Gravissimum Educationis [declaration on Christian Education on 28 October 1965]." Boletin Eclesiastico De Filipinas, 2016.
Let op: Deze citaties zijn niet altijd 100% accuraat.