R. H.  Millar and Goodbody, I., ?New species of ascidian from the West Indies?, Studies on the Fauna of Curacao and other Caribbean Islands, vol. 45, pp. 143-161, 1974.

R. H.  Millar, ?Cnemidocarpa lemchei, a new species of deep sea ascidian (Ascidiacea)?, Steenstrupia, vol. 5, no. 2, pp. 21-24, 1978.

R. H.  Millar, ?Ascidians from the Rockall Trough area of the northeast Atlantic?, Journal of Natural History, vol. 16, no. 2, pp. 165-182, 1982.

R. H.  Millar, ?Tunicata Ascidiacea?, Marine Invertebrates. Scandinavia, vol. 1, pp. 1-123, 1966.

R. H.  Millar, ?Australian ascidians in the British Museum (Natural History)?, Proceedings of the Zoological Society of London, vol. 141, no. 4, pp. 689-746, 1963.

R. H.  Millar, ?South African ascidians collected by Th. Mortensen with some additional material?. 1964.

R. H.  Millar, ?Ascidiacea?, Discovery Report, vol. 30, pp. 1-160, 1960.

R. H.  Millar, ?Ascidiacea?, Galathea Reports, vol. 1, pp. 189-209, 1959.