Παραπομπή APA

Walker, I., Westergaard-Nielsen, N. C., & Harmon, C. (2001). Education and earings in Europe: A cross country analysis of the returns to education. Cheltenham: Edward Elgar.

Παραπομπή Chicago Style

Walker, Ian, Niels C. Westergaard-Nielsen, and Colm Harmon. Education and Earings in Europe: A Cross Country Analysis of the Returns to Education. Cheltenham: Edward Elgar, 2001.

Παραπομπή MLA

Walker, Ian, Niels C. Westergaard-Nielsen, and Colm Harmon. Education and Earings in Europe: A Cross Country Analysis of the Returns to Education. Cheltenham: Edward Elgar, 2001.

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