Cita APA (7th ed.)

Grasman, J. (1971). On the birth of boundary layers. Mathematisch Centrum.

Cita Chicago (17th ed.)

Grasman, Johan. On the Birth of Boundary Layers. Amsterdam: Mathematisch Centrum, 1971.

Cita MLA (8th ed.)

Grasman, Johan. On the Birth of Boundary Layers. Mathematisch Centrum, 1971.