APA-viite (7. p.)

Frnman, N., & Frnman, P. O. (1965). JWKB approximation: Contributions to the theory. North-Holland Publishing.

Chicago-viite (17. p.)

Frnman, Nanny, ja Per Olof Frnman. JWKB Approximation: Contributions to the Theory. Amsterdam: North-Holland Publishing, 1965.

MLA-viite (9. p.)

Frnman, Nanny, ja Per Olof Frnman. JWKB Approximation: Contributions to the Theory. North-Holland Publishing, 1965.