Semple-McBean, Michelle. (2007). Teachers’ attitudinal ambivalence to mother tongue use in classroom instruction in Guyana: consequences for language policy and ESL programs. The International Journal of Learning, 14(2), 247-256. Teachers’ Attitudinal Ambivalence to Mother Tongue Use in Classroom Instruction in Guyana: Consequences for Language Policy and ESL Programs | Request PDF (researchgate.net)