APA

(1981). International series in management science, operations research. Boston, Mass. [u.a.]: Nijhoff.

Chicago

1981. International series in management science, operations research. Boston, Mass. [u.a.]: Nijhoff.

Harvard

(1981). International series in management science, operations research. Boston, Mass. [u.a.]: Nijhoff.

MLA

International series in management science, operations research. Boston, Mass. [u.a.]: Nijhoff. 1981.