Méndez-Sayago, J. M., Méndez Sayago, J. A., & Hernández Escolar, H. A. (2017). Impact of Retributive Taxes for Spills Control in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMéndez-Sayago, Johanna Mildred, Jhon Alexánder Méndez Sayago, और Hugo Alfonso Hernández Escolar. Impact of Retributive Taxes for Spills Control in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMéndez-Sayago, Johanna Mildred, et al. Impact of Retributive Taxes for Spills Control in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.
