APA

Trueblood E., . (1948). Alternative to futility. New York: Harper.

Chicago

Trueblood Elton, . 1948. Alternative to futility. New York: Harper.

Harvard

Trueblood E., . (1948). Alternative to futility. New York: Harper.

MLA

Trueblood Elton, . Alternative to futility. New York: Harper. 1948.