Cita APA (7a ed.)

Moulton, F. R. (1917). An introduction to astronomy (New and rev. ed.). MacMillan.

Cita Chicago Style (17a ed.)

Moulton, Forest Ray. An Introduction to Astronomy. New and rev. ed. New York: MacMillan, 1917.

Cita MLA (9a ed.)

Moulton, Forest Ray. An Introduction to Astronomy. New and rev. ed. MacMillan, 1917.