APA (7th ed.) Citation

Petroski, H. (1993). The pencil: A history of design and circumstance ([4th printing].). Knopf.

Chicago Style (17th ed.) Citation

Petroski, Henry. The Pencil: A History of Design and Circumstance. [4th printing]. New York: Knopf, 1993.

MLA (9th ed.) Citation

Petroski, Henry. The Pencil: A History of Design and Circumstance. [4th printing]. Knopf, 1993.

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