APA (7th ed.) Citation

Persen, L. N. (1972). Introduction to boundary layer theory. Tapir Forlag.

Chicago Style (17th ed.) Citation

Persen, Leif N. Introduction to Boundary Layer Theory. [n.p.]: Tapir Forlag, 1972.

MLA (9th ed.) Citation

Persen, Leif N. Introduction to Boundary Layer Theory. Tapir Forlag, 1972.

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