APA (7th ed.) Citation

HELLWIG, G. (1964). Differential Operators of Mathematical Physics: An introduction. Addison Wesley Publishing Company.

Chicago Style (17th ed.) Citation

HELLWIG, Gunter. Differential Operators of Mathematical Physics: An Introduction. Addison Wesley Publishing Company, 1964.

MLA (8th ed.) Citation

HELLWIG, Gunter. Differential Operators of Mathematical Physics: An Introduction. Addison Wesley Publishing Company, 1964.

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