Wolf, H. Cultural Approaches to Second Language Varieties of English: A Call for New Methodologies and a Review of Some Findings on (West) African English / Hans-Georg Wolf. Crossing borders : interdisciplinary approaches to Africa.(2004).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wolf, Hans-Georg. "Cultural Approaches to Second Language Varieties of English: A Call for New Methodologies and a Review of Some Findings on (West) African English / Hans-Georg Wolf." Crossing Borders : Interdisciplinary Approaches to Africa.(2004) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wolf, Hans-Georg. "Cultural Approaches to Second Language Varieties of English: A Call for New Methodologies and a Review of Some Findings on (West) African English / Hans-Georg Wolf." Crossing Borders : Interdisciplinary Approaches to Africa.(2004), .