Yamamoto, Y. (1940). Japanese Postage Stamps <for philatelists>. Board of Tourist Industry; Japanese Gov. Railways.
Chicago-Zitierstil (17. Ausg.)Yamamoto, Yokiti. Japanese Postage Stamps <for Philatelists>. Tokyo: Board of Tourist Industry; Japanese Gov. Railways, 1940.
MLA-Zitierstil (9. Ausg.)Yamamoto, Yokiti. Japanese Postage Stamps <for Philatelists>. Board of Tourist Industry; Japanese Gov. Railways, 1940.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.