Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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