APA (7th ed.) Citation

Langner, P. (1951). Foreign trade marks, designs, and copyrights (4th ed.). Langner, Parry, Card & Langner.

Chicago Style (17th ed.) Citation

Langner, Parry. Foreign Trade Marks, Designs, and Copyrights. 4th ed. New York: Langner, Parry, Card & Langner, 1951.

MLA (9th ed.) Citation

Langner, Parry. Foreign Trade Marks, Designs, and Copyrights. 4th ed. Langner, Parry, Card & Langner, 1951.

Warning: These citations may not always be 100% accurate.