APA (7th ed.) Citation

Hellwig, G. (1977). Partial Differential Equations: An Introduction (2. Aufl.). Teubner.

Chicago Style (17th ed.) Citation

Hellwig, Günter. Partial Differential Equations: An Introduction. 2. Aufl. Stuttgart: Teubner, 1977.

MLA (9th ed.) Citation

Hellwig, Günter. Partial Differential Equations: An Introduction. 2. Aufl. Teubner, 1977.

Warning: These citations may not always be 100% accurate.