Cita APA (7a ed.)

Abraham, J. M. (1979). Time and the sciences. Unesco.

Cita Chicago Style (17a ed.)

Abraham, Josefina Mena. Time and the Sciences. Paris: Unesco, 1979.

Cita MLA (9a ed.)

Abraham, Josefina Mena. Time and the Sciences. Unesco, 1979.