Hargrove, T. R. (1991). The mysteries of Taal: A Philippine volcano and lake her sea life and lost towns. Bookmark.
Chicago Style (17th ed.) CitationHargrove, Thomas R. The Mysteries of Taal: A Philippine Volcano and Lake Her Sea Life and Lost Towns. Manila: Bookmark, 1991.
MLA (9th ed.) CitationHargrove, Thomas R. The Mysteries of Taal: A Philippine Volcano and Lake Her Sea Life and Lost Towns. Bookmark, 1991.
Warning: These citations may not always be 100% accurate.