Gaya APA

Clark, F, X. (). 'The purpose of missions' a study of mission documents of the Holy See 1909-1946. Exerpta ex dissertatione P.U.G. . (New York: 1948).

Gaya MLA

Clark, Francis, X.. "'The purpose of missions' a study of mission documents of the Holy See 1909-1946. Exerpta ex dissertatione P.U.G. ". (New York: 1948), . Buku.