Lehmann Sørensen, Carsten. “Robert E. Riggs and I. Jostein Mykletun, Beyond Functionalism. Attitudes Toward International Organization in Norway and United States, Oslo: Universitetsforlaget, 225 S. Nkr. 87,50”. Politica, bd. 12, nr. 3, januar 1980, s. 148, doi:10.7146/politica.v12i3.67275.