Cita APA (7a ed.)
Hughes, S. (1990). Understanding guidance. Waverly Abbey House.
Cita Chicago Style (17a ed.)
Hughes, Selwyn. Understanding Guidance. Farnham: Waverly Abbey House, 1990.
Cita MLA (9a ed.)
Hughes, Selwyn. Understanding Guidance. Waverly Abbey House, 1990.
Precaución: Estas citas no son 100% exactas.