Cita APA (7th ed.)
Smith, E. A. (1995). The productivity manual (2nd ed.). Gulf Pub..
Cita Chicago (17th ed.)
Smith, Elizabeth A. The Productivity Manual. 2nd ed. Houston: Gulf Pub., 1995.
Cita MLA (9th ed.)
Smith, Elizabeth A. The Productivity Manual. 2nd ed. Gulf Pub., 1995.
Atenció: Aquestes cites poden no estar 100% correctes.