Costello, A. (1977). How to pray when troubled: From His cross to yours. Liquori Publications.
Chicago-referens (17:e uppl.)Costello, Andrew. How to Pray When Troubled: From His Cross to Yours. Liquori, Mo.: Liquori Publications, 1977.
MLA-referens (8:e uppl.)Costello, Andrew. How to Pray When Troubled: From His Cross to Yours. Liquori Publications, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.