Centro Escolar University, Manila. Department of English. (1967). Workbook in English three ([Rev. ed.].). [s.n.
Citace podle Chicago (17th ed.)Centro Escolar University, Manila. Department of English. Workbook in English Three. [Rev. ed.]. Manila: [s.n, 1967.
Citace podle MLA (9th ed.)Centro Escolar University, Manila. Department of English. Workbook in English Three. [Rev. ed.]. [s.n, 1967.
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