APA (7th ed.) Citation

Wellstead, P. E. (1979). Introduction to physical system modelling. Academic Press.

Chicago Style (17th ed.) Citation

Wellstead, P. E. Introduction to Physical System Modelling. London [etc.]: Academic Press, 1979.

MLA (9th ed.) Citation

Wellstead, P. E. Introduction to Physical System Modelling. Academic Press, 1979.

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