APA

Borgman H., . (1984). The pen and pencil technique book. New York: Watson-Guptill Publications.

Chicago

Borgman Harry, . 1984. The pen and pencil technique book. New York: Watson-Guptill Publications.

Harvard

Borgman H., . (1984). The pen and pencil technique book. New York: Watson-Guptill Publications.

MLA

Borgman Harry, . The pen and pencil technique book. New York: Watson-Guptill Publications. 1984.