توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Zahariah Pilus. (2002). Second language speech: Production and perception of voicing contrasts in world - final obstruents by Malay speakers of English. University of Wisconsin - Madison.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Zahariah Pilus. Second Language Speech: Production and Perception of Voicing Contrasts in World - Final Obstruents by Malay Speakers of English. Madison, WI.: University of Wisconsin - Madison, 2002.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Zahariah Pilus. Second Language Speech: Production and Perception of Voicing Contrasts in World - Final Obstruents by Malay Speakers of English. University of Wisconsin - Madison, 2002.