Gaya APA
Courant, R.
(2004).
Metthods of mathematical physics Vol. 1
.
Berlin:
Wiley-VCH Verlag GmbH.
Gaya MLA
Courant, Richard.
"Metthods of mathematical physics Vol. 1".
Berlin:
Wiley-VCH Verlag GmbH,
2004.
Printed Book.