Cita APA (7a ed.)

Sisteró, R. F. (1969). On the red-shift of quasars.

Cita Chicago Style (17a ed.)

Sisteró, Roberto Félix. On the Red-shift of Quasars. 1969.

Cita MLA (8a ed.)

Sisteró, Roberto Félix. On the Red-shift of Quasars. 1969.