Preuschen, Erwin (Ed.). Band 4 Der Johanneskommentar. Berlin, Boston: De Gruyter, 1903. Web. Retrieved 19 May. 2013, from http://www.degruyter.com/view/product/180848

Preuschen, E. (Ed.) (1903). Band 4 Der Johanneskommentar. Berlin, Boston: De Gruyter. Retrieved 19 May. 2013, from http://www.degruyter.com/view/product/180848

Preuschen, Erwin (Ed.). 1903. Band 4 Der Johanneskommentar. Berlin, Boston: De Gruyter. Retrieved 19 May. 2013, from http://www.degruyter.com/view/product/180848