APA (7th ed.) Citation

Knipe, P. Shades and shadow-pictures: The materials and techniques of american portrait silhouettes.

Chicago Style (17th ed.) Citation

Knipe, Penley. Shades and Shadow-pictures: The Materials and Techniques of American Portrait Silhouettes.

MLA (8th ed.) Citation

Knipe, Penley. Shades and Shadow-pictures: The Materials and Techniques of American Portrait Silhouettes.

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