Cita APA (7a ed.)

Leipholz, H. (1977). Direct variational methods and eigenvalue problems in engineering. Noordhoff International Publishing.

Cita Chicago Style (17a ed.)

Leipholz, H. Direct Variational Methods and Eigenvalue Problems in Engineering. Waterloo: Noordhoff International Publishing, 1977.

Cita MLA (9a ed.)

Leipholz, H. Direct Variational Methods and Eigenvalue Problems in Engineering. Noordhoff International Publishing, 1977.