APA (7. basım) Alıntı

Freeman, C. (1990). The Economics of innovation. E. Elgar.

Chicago Style (17. basım) Atıf

Freeman, Christopher. The Economics of Innovation. Aldershot, Hants, England: E. Elgar, 1990.

MLA (9th ed.) Atıf

Freeman, Christopher. The Economics of Innovation. E. Elgar, 1990.