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Lua i Stíl Chicago (17ú heag.)Lewin, Keith. Science Education in Malaysia and Sri Lanka: Curriculum Development and Course Evaluation 1970-1978. 1981.
Lua MLA (8ú heag.)Lewin, Keith. Science Education in Malaysia and Sri Lanka: Curriculum Development and Course Evaluation 1970-1978. 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.