Cita APA

Elson, H. W., & MacMullan, C. E. (1915). The story of the Old world. World Book Co..

Chicago Style (17th ed.) Citation

Elson, Henry W., i Cornelia E. MacMullan. The Story of the Old World. Yonkers-on-Hudson: World Book Co., 1915.

Cita MLA

Elson, Henry W., i Cornelia E. MacMullan. The Story of the Old World. World Book Co., 1915.