Παραπομπή APA

Hillard, J. (1976). Political and legal factors and regulation P881 Unit 14. Open University Press.

Παραπομπή Chicago Style

Hillard, John. Political and Legal Factors and Regulation P881 Unit 14. England: Open University Press, 1976.

Παραπομπή MLA

Hillard, John. Political and Legal Factors and Regulation P881 Unit 14. Open University Press, 1976.