APA

Porter D., Stirling D. S. G., . (1990). Integral equations : A practical treament, from spectral theory to applications. New York: Cambridge university press.

Chicago

Porter David, Stirling David S G, . 1990. Integral equations : A practical treament, from spectral theory to applications. New York: Cambridge university press.

Harvard

Porter D., Stirling D. S. G., . (1990). Integral equations : A practical treament, from spectral theory to applications. New York: Cambridge university press.

MLA

Porter David, Stirling David S G, . Integral equations : A practical treament, from spectral theory to applications. New York: Cambridge university press. 1990.