Chan, D.K. & Phillips, J.G. (1967)
The anatomy, histology and histochemistry of the rectal gland in the lip-shark Hemiscyllium plagiosum (Bennett).
Journal of Anatomy, 101(1), 137–157
Chan, D.K. & Phillips, J.G. (1966)
The embryology of the rectal gland of the spiny dogfish Squalus acanthias L.
Journal of Anatomy, 100(4), 899–903