Hayward, P. J., & Ryland, J. S. (1998). Cheilostomatous Bryozoa (2. ed.). Field Studies Council.
Chicago Style (17th ed.) CitationHayward, Peter J., and John S. Ryland. Cheilostomatous Bryozoa. 2. ed. Shrewsbury: Field Studies Council, 1998.
MLA (9th ed.) CitationHayward, Peter J., and John S. Ryland. Cheilostomatous Bryozoa. 2. ed. Field Studies Council, 1998.
Warning: These citations may not always be 100% accurate.