Floyd, G. (1970). Steps to spoken english: A graded course for spanish-speaking students. Teacher's book four. Longmans.
Cita Chicago Style (17a ed.)Floyd, Gareth. Steps to Spoken English: A Graded Course for Spanish-speaking Students. Teacher's Book Four. London: Longmans, 1970.
Cita MLA (8a ed.)Floyd, Gareth. Steps to Spoken English: A Graded Course for Spanish-speaking Students. Teacher's Book Four. Longmans, 1970.
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