APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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