The distinction between clean and unclean.

MLA

Gispen, Willem Hendrik. The Distinction Between Clean and Unclean. Leiden: Brill, 1940.

APA

Gispen, W. Hendrik. (1940). The distinction between clean and unclean. Leiden: Brill.

Chicago

Gispen, Willem Hendrik, The Distinction Between Clean and Unclean. Leiden: Brill, 1940.