APA (7th ed.) Citation

(2013). Catalogue of books on philately in the Public Library of the city of Boston. Project Gutenberg.

Chicago Style (17th ed.) Citation

Catalogue of Books on Philately in the Public Library of the City of Boston. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Catalogue of Books on Philately in the Public Library of the City of Boston. Project Gutenberg, 2013.

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