Citace podle APA (7th ed.)

Howie, S. (2002). English language proficiency and contextual factors influencing mathematics achievement of secondary school pupils in South Africa. PrintPartners.

Citace podle Chicago (17th ed.)

Howie, Sarah. English Language Proficiency and Contextual Factors Influencing Mathematics Achievement of Secondary School Pupils in South Africa. Enschede: PrintPartners, 2002.

Citace podle MLA (9th ed.)

Howie, Sarah. English Language Proficiency and Contextual Factors Influencing Mathematics Achievement of Secondary School Pupils in South Africa. PrintPartners, 2002.

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