Gaya APA

Langtangen, H, P., Logg, A. (2016). Solving PDEs in Python (1st ed. 2016). : Springer International Publishing.

Gaya MLA

Langtangen, Hans, Petter., Logg, Anders. "Solving PDEs in Python". 1st ed. 2016 : Springer International Publishing, 2016. Electronic Resource.