Symposium on Trees and Forests in an Urbanizing Environment, University of Massachusetts, University of Massachusetts (Amherst campus). Cooperative Extension Service, & University of Massachusetts at Amherst. Dept. of Forestry and Wildlife Management. (1971). A Symposium on Trees and Forests in an Urbanizing Environment: [papers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Symposium on Trees and Forests in an Urbanizing Environment, University of Massachusetts, University of Massachusetts (Amherst campus). Cooperative Extension Service, و University of Massachusetts at Amherst. Dept. of Forestry and Wildlife Management. A Symposium on Trees and Forests in an Urbanizing Environment: [papers. Amherst, 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Symposium on Trees and Forests in an Urbanizing Environment, University of Massachusetts, et al. A Symposium on Trees and Forests in an Urbanizing Environment: [papers. 1971.