APA (7th ed.) Citation

(1923). Scott's specialized catalogue of United States stamps. Scott Pub.

Chicago Style (17th ed.) Citation

Scott's Specialized Catalogue of United States Stamps. New York: Scott Pub, 1923.

MLA (9th ed.) Citation

Scott's Specialized Catalogue of United States Stamps. Scott Pub, 1923.

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