Tongue, R. K. (1977). Controlled and guided composition. SEAMEO Regional Language Centre.
Citazione stile Chigago Style (17a edizione)Tongue, R. K. Controlled and Guided Composition. Singapore: SEAMEO Regional Language Centre, 1977.
Citatione MLA (9a ed.)Tongue, R. K. Controlled and Guided Composition. SEAMEO Regional Language Centre, 1977.
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