Species 2000 and ITIS Catalogue of Life annual checklist 2004: indexing the world's known species [CD-ROM]
Bisby, F.A.; Froese, R.; Ruggiero, M.A.; Wilson, K.L. (Ed.) (2004). Species 2000 and ITIS Catalogue of Life annual checklist 2004: indexing the world's known species [CD-ROM]. Species 2000: Los Baños. 1 cd-rom pp.