APA

Nordin J. A., Salera V. 1. j. a., . (1950). Elementary economics. New York: Prentice-Hall.

Chicago

Nordin John A, Salera Virgil 1913 jt au, . 1950. Elementary economics. New York: Prentice-Hall.

Harvard

Nordin J. A., Salera V. 1. j. a., . (1950). Elementary economics. New York: Prentice-Hall.

MLA

Nordin John A, Salera Virgil 1913 jt au, . Elementary economics. New York: Prentice-Hall. 1950.