Servan - Schreiber, J. -. J. (1980). The world challenge. Simon and schuster.
Tohutoru Kātū Chicago (17th ed.)Servan - Schreiber, Jean - Jacque. The World Challenge. New York: Simon and schuster, 1980.
Tohutoro MLA (9th ed.)Servan - Schreiber, Jean - Jacque. The World Challenge. Simon and schuster, 1980.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.