Cita APA (7a ed.)
Ogundipe P. A. & Tregidgo P. S. (1972). Practical English: A comprehensive secondary course. Book three. Longman.
Cita Chicago Style (17a ed.)
Ogundipe P. A. y Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Three. England: Longman, 1972.
Cita MLA (9a ed.)
Ogundipe P. A. y Tregidgo P. S. Practical English: A Comprehensive Secondary Course. Book Three. Longman, 1972.
Precaución: Estas citas no son 100% exactas.