Gaya APA

Knaap, G. (1999). Cephas, Yogyakarta: Photography in the service of the Sultan . With a contribution by Yudhi Soerjoatmodjo. KITLV . Leiden: Leiden KITLV Press.

Gaya MLA

Knaap, Gerrit. "Cephas, Yogyakarta: Photography in the service of the Sultan . With a contribution by Yudhi Soerjoatmodjo. KITLV". Leiden: Leiden KITLV Press, 1999. Buku.