APA

Nettels C. P., . (1963). The roots of American civilization: a history of American colonial life. New York: Appleton-Century-Crofts.

Chicago

Nettels Curtis Putnam, . 1963. The roots of American civilization: a history of American colonial life. New York: Appleton-Century-Crofts.

Harvard

Nettels C. P., . (1963). The roots of American civilization: a history of American colonial life. New York: Appleton-Century-Crofts.

MLA

Nettels Curtis Putnam, . The roots of American civilization: a history of American colonial life. New York: Appleton-Century-Crofts. 1963.