Cita APA (7a ed.)

Contopoulos, G. (1972). The dynamics of spiral structure. Department of Physics and Astronomy.

Cita Chicago Style (17a ed.)

Contopoulos, G. The Dynamics of Spiral Structure. Maryland: Department of Physics and Astronomy, 1972.

Cita MLA (9a ed.)

Contopoulos, G. The Dynamics of Spiral Structure. Department of Physics and Astronomy, 1972.