Cita APA (7a ed.)

Rumelt, R. P. (1982). Diversification strategy and profitability. [s.n.].

Cita Chicago Style (17a ed.)

Rumelt, Richard P. Diversification Strategy and Profitability. [S.l.]: [s.n.], 1982.

Cita MLA (9a ed.)

Rumelt, Richard P. Diversification Strategy and Profitability. [s.n.], 1982.