Roelen, Bernard A. J. (2020), "Cloning", in Rodrigues, Gabriela; Roelen, Bernard A. J. (eds.), Concepts and Applications of Stem Cell Biology, Learning Materials in Biosciences, Cham: Springer International Publishing, pp.93–113, doi:10.1007/978-3-030-43939-2_6, ISBN978-3-030-43938-5, retrieved 4 August 2024
Centerwall, WR; Benirschke, K (September 1975). "An animal model for the XXY Klinefelter's syndrome in man: tortoiseshell and calico male cats". Am J Vet Res. 36 (9): 1275–80. PMID1163864.
Centerwall, Willard R.; Benirschke, K. (September 1975). "An animal model for the XXY Klinefelter's syndrome in man: tortoiseshell and calico male cats". American Journal of Veterinary Research. 36 (9): 1275–1280. ISSN0002-9645. PMID1163864.
Roelen, Bernard A. J. (2020), "Cloning", in Rodrigues, Gabriela; Roelen, Bernard A. J. (eds.), Concepts and Applications of Stem Cell Biology, Learning Materials in Biosciences, Cham: Springer International Publishing, pp.93–113, doi:10.1007/978-3-030-43939-2_6, ISBN978-3-030-43938-5, retrieved 4 August 2024
Centerwall, Willard R.; Benirschke, K. (September 1975). "An animal model for the XXY Klinefelter's syndrome in man: tortoiseshell and calico male cats". American Journal of Veterinary Research. 36 (9): 1275–1280. ISSN0002-9645. PMID1163864.