Cita APA (7th ed.)

Asimov, I. (1975). The end of eternity. Abelard-Schuman.

Cita Chicago (17th ed.)

Asimov, Isaac. The End of Eternity. London: Abelard-Schuman, 1975.

Cita MLA (8th ed.)

Asimov, Isaac. The End of Eternity. Abelard-Schuman, 1975.