Cita APA (7th ed.)

Budden, P., & Norbury, J. (1979). NONLINEAR ELLIPTIC EIGENVALUE PROBLEM.

Cita Chicago (17th ed.)

Budden, P., i J. Norbury. NONLINEAR ELLIPTIC EIGENVALUE PROBLEM. 1979.

Cita MLA (9th ed.)

Budden, P., i J. Norbury. NONLINEAR ELLIPTIC EIGENVALUE PROBLEM. 1979.