APA সাইটেশন

Petroski, H. (1992). The pencil: A history of design and circumstance. New York: Alfred A. Knoff.

শিকাগো স্টাইলে সাইটেশন

Petroski, Henry. The Pencil: A History of Design and Circumstance. New York: Alfred A. Knoff, 1992.

এমএলএ সাইটেশন

Petroski, Henry. The Pencil: A History of Design and Circumstance. New York: Alfred A. Knoff, 1992.