Παραπομπή APA

Kugel, Y., & Gruenberg, W. G. (1977). Internatinoal Pay Offs. D. C. Helth.

Παραπομπή Chicago Style

Kugel, Yerachmiel, και W. Gladys Gruenberg. Internatinoal Pay Offs. Toronto: D. C. Helth, 1977.

Παραπομπή MLA

Kugel, Yerachmiel, και W. Gladys Gruenberg. Internatinoal Pay Offs. D. C. Helth, 1977.