Gaya APA

Zijl, T, S. (1963). Gerard Groote, ascetic and reformer (1340-1384). Disertasi catholic University Washington. . Washington: The Catholic University of America Press.

Gaya MLA

Zijl, Th.P.van,, S.V.D.. "Gerard Groote, ascetic and reformer (1340-1384). Disertasi catholic University Washington. ". Washington: The Catholic University of America Press, 1963. Buku.