@book { author = {George B. Thomas and Maurice D. Weir and Joel Hass and Frank R. Giordano}, title = {Thomas-féle kalkulus 1.}, year = {2010}, publisher = {Typotex Kiadó}, isbn = {978 963 279 833 2}, URL = {https://edu.interkonyv.hu/konyvek/thomas-kalkulus-1/} }