APA Citation

Keppel, F., & Pennell, J. (1905). Mr. Pennell's etchings of New York "skyscrapers". New York: Frederick Keppel & Co..

Chicago Style Citation

Keppel, Frederick, and Joseph Pennell. Mr. Pennell's Etchings of New York "skyscrapers". New York: Frederick Keppel & Co., 1905.

MLA Citation

Keppel, Frederick, and Joseph Pennell. Mr. Pennell's Etchings of New York "skyscrapers". New York: Frederick Keppel & Co., 1905.

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