Environment agency government of Japan. (1981). Illustrated white paper on the envieonment in Japan 1981. Tokyo: Environment agency government of Japan.
Chicago Style aipamenaEnvironment agency government of Japan. Illustrated White Paper On the Envieonment in Japan 1981. Tokyo: Environment agency government of Japan, 1981.
MLA aipamenaEnvironment agency government of Japan. Illustrated White Paper On the Envieonment in Japan 1981. Tokyo: Environment agency government of Japan, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.