Gaya APA

Black, S, P., Jr., . (2001). Entrepreneurship and annovation automobile insurance : Samuel P Black, Jr. and the rise of Erie insurance, 1923-1961 . New York: Rautdge.

Gaya MLA

Black, Samuel, P., Jr., . "Entrepreneurship and annovation automobile insurance : Samuel P Black, Jr. and the rise of Erie insurance, 1923-1961". New York: Rautdge, 2001. Text.