Carreon, R. D. (2004). A study of the operation and usage of a non-motorized mode of public transportation: The case of the tri-wheeler in San Fernando City.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carreon, Randolph D. A Study of the Operation and Usage of a Non-motorized Mode of Public Transportation: The Case of the Tri-wheeler in San Fernando City. 2004.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Carreon, Randolph D. A Study of the Operation and Usage of a Non-motorized Mode of Public Transportation: The Case of the Tri-wheeler in San Fernando City. 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.