Waals, J. v. d. Over den wereldacther. Haarlem: [s.n.].
Chicago Style CitationWaals, J.D. van der. Over Den Wereldacther. Haarlem: [s.n.].
MLA CitationWaals, J.D. van der. Over Den Wereldacther. Haarlem: [s.n.].
Warning: These citations may not always be 100% accurate.