Somerset, A. (2002). Basic number skills: Why students fail in math. National Institute for Science and Mathematics Education Development, University of the Philippines.
Цитирование в стиле Чикаго (17-е изд.)Somerset, Anthony. Basic Number Skills: Why Students Fail in Math. Quezon City: National Institute for Science and Mathematics Education Development, University of the Philippines, 2002.
Цитирование MLA (9-е изд.)Somerset, Anthony. Basic Number Skills: Why Students Fail in Math. National Institute for Science and Mathematics Education Development, University of the Philippines, 2002.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.