Rees, W. J. (1987). Hydroids from the John Murray Expedition to the Indian Ocean, with revisory notes on Hydrodendron, Abietinella, Cryptolaria and Zygophylax (Cnidaria: Hydrozoa). Rijksmuseum van Natuurlijke Historie.
Chicago Style (17th ed.) CitationRees, William J. Hydroids from the John Murray Expedition to the Indian Ocean, with Revisory Notes on Hydrodendron, Abietinella, Cryptolaria and Zygophylax (Cnidaria: Hydrozoa). Leiden: Rijksmuseum van Natuurlijke Historie, 1987.
MLA (9th ed.) CitationRees, William J. Hydroids from the John Murray Expedition to the Indian Ocean, with Revisory Notes on Hydrodendron, Abietinella, Cryptolaria and Zygophylax (Cnidaria: Hydrozoa). Rijksmuseum van Natuurlijke Historie, 1987.
Warning: These citations may not always be 100% accurate.