Begon, M., Harper, J. L., & Townsend, C. R. (1990). Ecology: Individuals, populations, and communities (2nd ed.). Blackwell Scientific Publications ; Distributors, USA, Publishers' Business Services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Begon, Michael, John L. Harper, و Colin R. Townsend. Ecology: Individuals, Populations, and Communities. 2nd ed. Boston : Brookline Village, Mass.: Blackwell Scientific Publications ; Distributors, USA, Publishers' Business Services, 1990.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Begon, Michael, et al. Ecology: Individuals, Populations, and Communities. 2nd ed. Blackwell Scientific Publications ; Distributors, USA, Publishers' Business Services, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.