Gaya APA

Gertrude, . et al (13181). The true prayers of st. Gertrude & st. Mechtilde (o beata trinitas) . : sheed&ward.

Gaya MLA

Gertrude, . et al. "The true prayers of st. Gertrude & st. Mechtilde (o beata trinitas)". : sheed&ward, 13181. Text.