Cita APA (7a ed.)

O'Leary, Z. (2010). The essential guide to doing your research project (Repr.). Sage.

Cita Chicago Style (17a ed.)

O'Leary, Zina. The Essential Guide to Doing Your Research Project. Repr. Los Angeles [etc.]: Sage, 2010.

Cita MLA (9a ed.)

O'Leary, Zina. The Essential Guide to Doing Your Research Project. Repr. Sage, 2010.