APA

Boyd R., Gasper P., . (1991). The philosophy of science. Cambridge, Mass. [u.a.]: MIT Press.

Chicago

Boyd Richard, Gasper Philip, . 1991. The philosophy of science. Cambridge, Mass. [u.a.]: MIT Press.

Harvard

Boyd R., Gasper P., . (1991). The philosophy of science. Cambridge, Mass. [u.a.]: MIT Press.

MLA

Boyd Richard, Gasper Philip, . The philosophy of science. Cambridge, Mass. [u.a.]: MIT Press. 1991.