Yorkshire Regional Examinations Board. (1966). Regulations and syllabuses for the Certificate of Secondary Education examinations 1966. Yorkshire Regional Examinations Board.
Citazione stile Chigago Style (17a edizione)Yorkshire Regional Examinations Board. Regulations and Syllabuses for the Certificate of Secondary Education Examinations 1966. Leeds: Yorkshire Regional Examinations Board, 1966.
Citatione MLA (9a ed.)Yorkshire Regional Examinations Board. Regulations and Syllabuses for the Certificate of Secondary Education Examinations 1966. Yorkshire Regional Examinations Board, 1966.
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