Groothoff, C. T. (1916). Deprimaire tinertsafzettingen van Billiton.
Chicago Style (17th ed.) CitationGroothoff, Ch. T. Deprimaire Tinertsafzettingen Van Billiton. 1916.
MLA (9th ed.) CitationGroothoff, Ch. T. Deprimaire Tinertsafzettingen Van Billiton. 1916.
Warning: These citations may not always be 100% accurate.