Friedlander, M. W. (1985). Astronomy, from Stonehenge to quasars. Prentice-Hall.
Cita Chicago (17th ed.)Friedlander, Michael W. Astronomy, from Stonehenge to Quasars. Englewood Cliffs, N.J: Prentice-Hall, 1985.
Cita MLA (9th ed.)Friedlander, Michael W. Astronomy, from Stonehenge to Quasars. Prentice-Hall, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.