Παραπομπή APA

Hadley, G., Kemp, M., Kemp, M. C., & Kemp, M. C. (1971). Variational methods in economics. Amsterdam: North-Holland.

Παραπομπή Chicago Style

Hadley, G., M.C Kemp, Murray C. Kemp, and M. C. Kemp. Variational Methods in Economics. Amsterdam: North-Holland, 1971.

Παραπομπή MLA

Hadley, G., M.C Kemp, Murray C. Kemp, and M. C. Kemp. Variational Methods in Economics. Amsterdam: North-Holland, 1971.

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