Bristol, Eng. University. Dept. of Geography, Chisholm, M., Haggett, P., & Peel, R. F. (1975). Processes in physical and human geography: Bristol essays. Heinemann Educational.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bristol, Eng. University. Dept. of Geography, Michael Chisholm, Peter Haggett, و Ronald Francis Peel. Processes in Physical and Human Geography: Bristol Essays. London: Heinemann Educational, 1975.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Bristol, Eng. University. Dept. of Geography, et al. Processes in Physical and Human Geography: Bristol Essays. Heinemann Educational, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.