APA-referens (7:e uppl.)
Heering, J. (2003). Hugo Grotius as apologist for the Christian religion: A study of his work De veritate religionis Christianae, 1640. Brill.
Chicago-referens (17:e uppl.)
Heering, Jan-Paul. Hugo Grotius as Apologist for the Christian Religion: A Study of His Work De Veritate Religionis Christianae, 1640. Leiden ; Boston: Brill, 2003.
MLA-referens (9:e uppl.)
Heering, Jan-Paul. Hugo Grotius as Apologist for the Christian Religion: A Study of His Work De Veritate Religionis Christianae, 1640. Brill, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.