Novotny, T. E., Lum, K., Smith, E., Wang, V., & Barnes, R. (2009). Cigarettes Butts and the Case for an Environmental Policy on Hazardous Cigarette Waste. Molecular Diversity Preservation International (MDPI).
استشهاد بنمط شيكاغوNovotny, Thomas E., Kristen Lum, Elizabeth Smith, Vivian Wang, و Richard Barnes. Cigarettes Butts and the Case for an Environmental Policy On Hazardous Cigarette Waste. Molecular Diversity Preservation International (MDPI), 2009.
MLA استشهادNovotny, Thomas E., et al. Cigarettes Butts and the Case for an Environmental Policy On Hazardous Cigarette Waste. Molecular Diversity Preservation International (MDPI), 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.