APA (7th ed.) Citation

Eckstein, Z., & Zimmermann, K. F. (1989). Economic theory of optimal population. Springer-Verlag.

Chicago Style (17th ed.) Citation

Eckstein, Zvi, and Klaus F. Zimmermann. Economic Theory of Optimal Population. Berlin: Springer-Verlag, 1989.

MLA (9th ed.) Citation

Eckstein, Zvi, and Klaus F. Zimmermann. Economic Theory of Optimal Population. Springer-Verlag, 1989.