APA

Prochnow H. V., . (1949). The toasmaster's handbook. New York: Prentice-Hall.

Chicago

Prochnow Herbert Victor, . 1949. The toasmaster's handbook. New York: Prentice-Hall.

Harvard

Prochnow H. V., . (1949). The toasmaster's handbook. New York: Prentice-Hall.

MLA

Prochnow Herbert Victor, . The toasmaster's handbook. New York: Prentice-Hall. 1949.