Bill, W. E., & MacGregor, J. (1992). The Columbus Quincentennial, a sourcebook. Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College.
Cita Chicago Style (17a ed.)Bill, Willard E., y Jean MacGregor. The Columbus Quincentennial, a Sourcebook. Olympia, Wash.: Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College, 1992.
Cita MLA (8a ed.)Bill, Willard E., y Jean MacGregor. The Columbus Quincentennial, a Sourcebook. Washington Center for Improving the Quality of Undergraduate Education, The Evergreen State College, 1992.
Precaución: Estas citas no son 100% exactas.