Παραπομπή APA

Emery, F., & Trist, E. (1973). Towards a special ecology: Contextual appreciation of the future in the presents. Plenum.

Παραπομπή Chicago Style

Emery, F.E, και E.L Trist. Towards a Special Ecology: Contextual Appreciation of the Future in the Presents. London: Plenum, 1973.

Παραπομπή MLA

Emery, F.E, και E.L Trist. Towards a Special Ecology: Contextual Appreciation of the Future in the Presents. Plenum, 1973.