APA

Glennon L., Okrent D., Glaser M., Bernard W. & Garraty J. A. (2000). The 20th century: [an illustrated history of our lives and times]. North Dighton, MA: JG Press.

Chicago

Glennon Lorraine, Okrent Daniel, Glaser Milton, Bernard Walter and Garraty John A. 2000. The 20th century: [an illustrated history of our lives and times]. North Dighton, MA: JG Press.

Harvard

Glennon L., Okrent D., Glaser M., Bernard W. and Garraty J. A. (2000). The 20th century: [an illustrated history of our lives and times]. North Dighton, MA: JG Press.

MLA

Glennon Lorraine, Okrent Daniel, Glaser Milton, Bernard Walter and Garraty John A. The 20th century: [an illustrated history of our lives and times]. North Dighton, MA: JG Press. 2000.