Perkins, H. C., & Muzzey, D. S. (1943). Students' objective-test manual: To accompany Muzzey's A history of our country (Rev. ed.). Ginn and Co..
Citace podle Chicago (17th ed.)Perkins, Howard C., a David Saville Muzzey. Students' Objective-test Manual: To Accompany Muzzey's A History of Our Country. Rev. ed. Boston: Ginn and Co., 1943.
Citace podle MLA (8th ed.)Perkins, Howard C., a David Saville Muzzey. Students' Objective-test Manual: To Accompany Muzzey's A History of Our Country. Rev. ed. Ginn and Co., 1943.
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