Gaya APA

Brinkley, F, F, A. (1982). America In The Twentiethh Century (Ed. 9). New York: McGraw-Hill, Inc..

Gaya MLA

Brinkley, Frank, Freidel,, Alan. "America In The Twentiethh Century". Ed. 9 New York: McGraw-Hill, Inc., 1982. Text.