Cita APA (7a ed.)

SPENCER, H. (1907). Les premiers principes (11 ed.). Felix Alcan.

Cita Chicago Style (17a ed.)

SPENCER, Herbert. Les Premiers Principes. 11 ed. Paris: Felix Alcan, 1907.

Cita MLA (9a ed.)

SPENCER, Herbert. Les Premiers Principes. 11 ed. Felix Alcan, 1907.