Gade, B.; Parker, E. D. (1997). "The effect of life cycle stage and genotype on desiccation tolerance in the colonizing parthenogenetic cockroach Pycnoscelus surinamensis and its sexual ancestor P. indicus". Journal of Evolutionary Biology. 10 (4): 479–493. doi:10.1046/j.1420-9101.1997.10040479.x. ISSN1010-061X. S2CID86499047.
Roth, Louis M (17 July 1967). "Sexual Isolation in Parthenogenetic Pycnoscelus surinamensis and Application of the Name Pycnoscelus indicus to Its Bisexual Relative (Dictyoptera: Blattaria: Blaberidae: Pycnoscelinae)". Annals of the Entomological Society of America. 60 (4): 774–779. doi:10.1093/aesa/60.4.774.
Gade, B.; Parker, E. D. (1997). "The effect of life cycle stage and genotype on desiccation tolerance in the colonizing parthenogenetic cockroach Pycnoscelus surinamensis and its sexual ancestor P. indicus". Journal of Evolutionary Biology. 10 (4): 479–493. doi:10.1046/j.1420-9101.1997.10040479.x. ISSN1010-061X. S2CID86499047.
Gade, B.; Parker, E. D. (1997). "The effect of life cycle stage and genotype on desiccation tolerance in the colonizing parthenogenetic cockroach Pycnoscelus surinamensis and its sexual ancestor P. indicus". Journal of Evolutionary Biology. 10 (4): 479–493. doi:10.1046/j.1420-9101.1997.10040479.x. ISSN1010-061X. S2CID86499047.