Burgos, M.; Ito, S.; Segal, J. S.; Tran, T. P. (1997). "Effect of Gossypol on Ultrastructure of Spisula Sperm". The Biological Bulletin. 193 (2): 228–229. doi:10.1086/BBLv193n2p228. PMID28575607.
Burgos, M.; Ito, S.; Segal, J. S.; Tran, T. P. (1997). "Effect of Gossypol on Ultrastructure of Spisula Sperm". The Biological Bulletin. 193 (2): 228–229. doi:10.1086/BBLv193n2p228. PMID28575607.