D. G. Teixeira, J. L. Guerra, Z. Silva, R. E. G. R. Azarias, and M. F. Martins, “Macroscopic aspects of the anatomy of the reproductive system of escargots: Achatina fulica and Achatina monochromatica”, Braz. J. Vet. Res. Anim. Sci., vol. 45, no. 5, pp. 333–338, Oct. 2008, doi: 10.11606/issn.1678-4456.bjvras.2008.26673.