Frolov, I. T., & Stepin, V. S. (2001). Akademik Ivan Timofeevich Frolov: Ocherki, vospominani︠i︡a, materialy. "Nauka".
Dyfyniad Arddull ChicagoFrolov, Ivan Timofeevich, and V. S. Stepin. Akademik Ivan Timofeevich Frolov: Ocherki, Vospominani︠i︡a, Materialy. Moskva: "Nauka", 2001.
Dyfyniad MLAFrolov, Ivan Timofeevich, and V. S. Stepin. Akademik Ivan Timofeevich Frolov: Ocherki, Vospominani︠i︡a, Materialy. "Nauka", 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.