De-Nóbrega, J. and Villamizar, E. 2004. Sexual ratio in populations of Sparisoma radians and Sparisoma atomarium at Los Roques Archipelago, Venezuela: An evolutionary approach. Ciencias Marinas. 30, 1B (Mar. 2004), 251–258. DOI:https://doi.org/10.7773/cm.v30i12.103.