Gaya APA

SJ, L, H. et al (1960). The roman catacombs and their martyrs (Die romischen katakomben und ibre martyrer) . : darton,longman&todd.

Gaya MLA

SJ, Ludwig, Hertling,. et al. "The roman catacombs and their martyrs (Die romischen katakomben und ibre martyrer)". : darton,longman&todd, 1960. Text.