APA (7th ed.) Citation

Hertling, L., & Kirschbaum, E. (1949). Le catacombe romane e i loro martiri (2“ ed.). Pontificia Universit Gregoriana.

Chicago Style (17th ed.) Citation

Hertling, Ludwig, and E. Kirschbaum. Le Catacombe Romane E I Loro Martiri. 2“ ed. Roma: Pontificia Universit Gregoriana, 1949.

MLA (9th ed.) Citation

Hertling, Ludwig, and E. Kirschbaum. Le Catacombe Romane E I Loro Martiri. 2“ ed. Pontificia Universit Gregoriana, 1949.