The Ethiopic liturgy its sources, development, and present form
MLA
Mercer, Samuel A. B. and YaʼItyop̣yā ʼortodoks tawāḥedo béta kerestiyān. The Ethiopic liturgy its sources, development, and present form. New York : AMS Press, [1970]
APA
Mercer, S. & YaʼItyop̣yā ʼortodoks tawāḥedo béta kerestiyān. (1970). The Ethiopic liturgy its sources, development, and present form. New York : AMS Press.
Chicago
Mercer, Samuel A. B. and YaʼItyop̣yā ʼortodoks tawāḥedo béta kerestiyān. The Ethiopic liturgy its sources, development, and present form. New York : AMS Press, [1970]