APA (7th ed.) Citation

O'Regan, D. (1994). Theory of singular boundary value problems. World Scientific.

Chicago Style (17th ed.) Citation

O'Regan, Donal. Theory of Singular Boundary Value Problems. Singapore: World Scientific, 1994.

MLA (9th ed.) Citation

O'Regan, Donal. Theory of Singular Boundary Value Problems. World Scientific, 1994.

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