APA (7th ed.) Citation

Romer, P. M. (1993). Idea gaps and object gaps in economic development. [s.n.].

Chicago Style (17th ed.) Citation

Romer, Paul Michael. Idea Gaps and Object Gaps in Economic Development. [S.l.]: [s.n.], 1993.

MLA (9th ed.) Citation

Romer, Paul Michael. Idea Gaps and Object Gaps in Economic Development. [s.n.], 1993.