Organisation for Economic Co-operation and Development. (1970). Comparisons between member countries in education, research & development, technological innovation, international economic exchanges.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումOrganisation for Economic Co-operation and Development. Comparisons Between Member Countries in Education, Research & Development, Technological Innovation, International Economic Exchanges. Paris, 1970.
MLA (9րդ խմբ.) ՄեջբերումOrganisation for Economic Co-operation and Development. Comparisons Between Member Countries in Education, Research & Development, Technological Innovation, International Economic Exchanges. 1970.
Զգուշացում. այս մեջբերումները միշտ չէ, որ կարող են 100% ճշգրիտ լինել.