Hardon, John A. The Catholic catechism / John A. Hardon. - 1st ed. - Garden City, N.Y. : Doubleday, 1975. - 623 p. ; 22 cm. ISBN: 0385080395. 038508045X LCCN: 73081433 LC Class. No.: BX1751.2 .H36 1975 / .H36 Dewey Class. No.: 230/.2