APA

Hannan M. T., Freeman J., . (1989). Organizational ecology. Cambridge, Mass. [u.a.]: Harvard Univ. Press.

Chicago

Hannan Michael T, Freeman John, . 1989. Organizational ecology. Cambridge, Mass. [u.a.]: Harvard Univ. Press.

Harvard

Hannan M. T., Freeman J., . (1989). Organizational ecology. Cambridge, Mass. [u.a.]: Harvard Univ. Press.

MLA

Hannan Michael T, Freeman John, . Organizational ecology. Cambridge, Mass. [u.a.]: Harvard Univ. Press. 1989.