Long , Y. F. (2010). Needs analysis on 2-Dimensional Quick Response (QR) code as a mobile tag in genetically modified food tagging services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Long , Yoon Foo. Needs Analysis on 2-Dimensional Quick Response (QR) Code as a Mobile tag in Genetically Modified Food Tagging Services. 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Long , Yoon Foo. Needs Analysis on 2-Dimensional Quick Response (QR) Code as a Mobile tag in Genetically Modified Food Tagging Services. 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.