Maas, O. (1938). Franciscans in the Middle Kingdom: A survey of Franciscan missions in China from the Middle Ages to the present time. Collectanea Commiss. Synodal..
Čikaški stil citiranja (17. izdanje)Maas, Otto. Franciscans in the Middle Kingdom: A Survey of Franciscan Missions in China from the Middle Ages to the Present Time. Peking: Collectanea Commiss. Synodal., 1938.
MLA način citiranja (8. izdanje)Maas, Otto. Franciscans in the Middle Kingdom: A Survey of Franciscan Missions in China from the Middle Ages to the Present Time. Collectanea Commiss. Synodal., 1938.
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