Hass, H. (1972). To unplumbed depths. Harrap.
Chicago Style (17th ed.) CitationHass, Hans. To Unplumbed Depths. London: Harrap, 1972.
MLA (9th ed.) CitationHass, Hans. To Unplumbed Depths. Harrap, 1972.
Warning: These citations may not always be 100% accurate.