APA (7th ed.) Citation

Howie, S. J., & Plomp, T. (2003). Language Proficiency and Contextual Factors Influencing Secondary Students' Performance in Mathematics in South Africa.

Chicago Style (17th ed.) Citation

Howie, Sarah J., and Tjeerd Plomp. Language Proficiency and Contextual Factors Influencing Secondary Students' Performance in Mathematics in South Africa. 2003.

MLA (9th ed.) Citation

Howie, Sarah J., and Tjeerd Plomp. Language Proficiency and Contextual Factors Influencing Secondary Students' Performance in Mathematics in South Africa. 2003.

Warning: These citations may not always be 100% accurate.