Cita APA (7th ed.)
Johnson, L. v. (1958). The Roman Origins of our calendar. American Classical League.
Cita Chicago (17th ed.)
Johnson, L. van. The Roman Origins of Our Calendar. [New York]: American Classical League, 1958.
Cita MLA (9th ed.)
Johnson, L. van. The Roman Origins of Our Calendar. American Classical League, 1958.
Atenció: Aquestes cites poden no estar 100% correctes.