Singhakaew S., Seehabutr V., Kruatrachue M., Sretarugsa P. & Romratanapun S. (2003). "Ultrastructure of male germ cells in the testes of abalone, Haliotis ovina Gmelin". Molluscan Research23(2): 109–121. doi:10.1071/MR02016, PDF.
Singhakaew S., Seehabutr V., Kruatrachue M., Sretarugsa P. & Romratanapun S. (2003). "Ultrastructure of male germ cells in the testes of abalone, Haliotis ovina Gmelin". Molluscan Research23(2): 109–121. doi:10.1071/MR02016, PDF.