APA

Trueblood E., . (1952). Your other vocation. New York: Harper.

Chicago

Trueblood Elton, . 1952. Your other vocation. New York: Harper.

Harvard

Trueblood E., . (1952). Your other vocation. New York: Harper.

MLA

Trueblood Elton, . Your other vocation. New York: Harper. 1952.