APA

Congregazione per il clero, . (1971). General catechetical directory. Washington (D.C.): United States Catholic Conference. Publications Office.

Chicago

Congregazione per il clero, . 1971. General catechetical directory. Washington (D.C.): United States Catholic Conference. Publications Office.

Harvard

Congregazione per il clero, . (1971). General catechetical directory. Washington (D.C.): United States Catholic Conference. Publications Office.

MLA

Congregazione per il clero, . General catechetical directory. Washington (D.C.): United States Catholic Conference. Publications Office. 1971.