Gaya APA

Kernkamp, G. (1901). Over Robert Fruin, I. Byvanck over Fruin, II. Fruin-studies. . Utrecht: Kemink.

Gaya MLA

Kernkamp, G.W.. "Over Robert Fruin, I. Byvanck over Fruin, II. Fruin-studies. ". Utrecht: Kemink, 1901. Buku.