Catechismus catholicus.

MLA

Gasparri, Pietro. Catechismus Catholicus. Altera editio [Roma]: Typis Polyglottis Vaticanis, 1930.

APA

Gasparri, P. (1930). Catechismus catholicus. Altera editio [Roma]: Typis Polyglottis Vaticanis.

Chicago

Gasparri, Pietro, Catechismus Catholicus. Altera editio [Roma]: Typis Polyglottis Vaticanis, 1930.