APA (7th ed.) Citation

Phillips. (1991). Pictorial envelopes of the nineteenth century. Phillips.

Chicago Style (17th ed.) Citation

Phillips. Pictorial Envelopes of the Nineteenth Century. London: Phillips, 1991.

MLA (9th ed.) Citation

Phillips. Pictorial Envelopes of the Nineteenth Century. Phillips, 1991.

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