Bill, W. E., & MacGregor, J. (1992). The Columbus Quincentennial, a sourcebook. Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College.
Цитирование в стиле Чикаго (17-е изд.)Bill, Willard E., и Jean MacGregor. The Columbus Quincentennial, a Sourcebook. Olympia, Wash.: Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College, 1992.
Цитирование MLA (8-е изд.)Bill, Willard E., и Jean MacGregor. The Columbus Quincentennial, a Sourcebook. Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College, 1992.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.