Citazione APA

Duffner, I. Sorrowful and Immaculate Heart of Mary. Ave Maria Institute.

Stile di citazione Chicago

Duffner, I. Sorrowful and Immaculate Heart of Mary. Washington, NJ: Ave Maria Institute.

Citazione MLA

Duffner, I. Sorrowful and Immaculate Heart of Mary. Ave Maria Institute.