Sigoh, H. A. (2010). Language learning strategies and self-efficacy of native ethnic pupils in learning English as a second language.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sigoh, Hellena Ak. Language Learning Strategies and Self-efficacy of Native Ethnic Pupils in Learning English as a Second Language. 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sigoh, Hellena Ak. Language Learning Strategies and Self-efficacy of Native Ethnic Pupils in Learning English as a Second Language. 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.