Cita APA (7a ed.)

Vogel, N. (1949). La gravitation universelle explicable? La Sirène.

Cita Chicago Style (17a ed.)

Vogel, Nicolás. La Gravitation Universelle Explicable? Genève: La Sirène, 1949.

Cita MLA (9a ed.)

Vogel, Nicolás. La Gravitation Universelle Explicable? La Sirène, 1949.