Gerhards. Introduction to the Study of Liturgy. Liturgical Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGerhards. Introduction to the Study of Liturgy. Liturgical Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGerhards. Introduction to the Study of Liturgy. Liturgical Press.
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