APA

Pieper M. H., Pieper, . (2003). Addicted to unhappiness : free yourself from moods and behaviors that undermine relationships, work, and the life you want. New YorK: McGraw-Hill.

Chicago

Pieper Martha Heineman, Pieper, . 2003. Addicted to unhappiness : free yourself from moods and behaviors that undermine relationships, work, and the life you want. New YorK: McGraw-Hill.

Harvard

Pieper M. H., Pieper, . (2003). Addicted to unhappiness : free yourself from moods and behaviors that undermine relationships, work, and the life you want. New YorK: McGraw-Hill.

MLA

Pieper Martha Heineman, Pieper, . Addicted to unhappiness : free yourself from moods and behaviors that undermine relationships, work, and the life you want. New YorK: McGraw-Hill. 2003.