Παραπομπή APA

Wold, H. (1981). Fix-Point Approach to Interdependent Systems. North-Holland Publishing Company.

Παραπομπή Chicago Style

Wold, Herman. Fix-Point Approach to Interdependent Systems. Amsterdam: North-Holland Publishing Company, 1981.

Παραπομπή MLA

Wold, Herman. Fix-Point Approach to Interdependent Systems. North-Holland Publishing Company, 1981.