Wal, D. v. d., & Snouck Hargronje, C. (2011). Christiaan Snouck Hurgronje: The first western photographer in Mecca, 1884-1885.
Čikaški stil citiranja (17. izdanje)Wal, Durkje van der, i Christiaan Snouck Hargronje. Christiaan Snouck Hurgronje: The First Western Photographer in Mecca, 1884-1885. Amsterdam, 2011.
MLA način citiranja (8. izdanje)Wal, Durkje van der, i Christiaan Snouck Hargronje. Christiaan Snouck Hurgronje: The First Western Photographer in Mecca, 1884-1885. 2011.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.