Cita APA (7a ed.)
McCallum, G. P. Words People Use: Passive/Active Vocabulary Skills for Students Of English as a Second Language. Harper and Row.
Cita estilo Chicago (17a ed.)
McCallum, George P. Words People Use: Passive/Active Vocabulary Skills for Students Of English as a Second Language. Nueva York, EUA: Harper and Row.
Cita MLA (9a ed.)
McCallum, George P. Words People Use: Passive/Active Vocabulary Skills for Students Of English as a Second Language. Harper and Row.
Precaución: Estas citas no son 100% exactas.