(1991). The World of Learning 1991 (41.). Mc Graw Hill.
Чикаго маягийн жагсаалтThe World of Learning 1991. 41. Токуо: Mc Graw Hill, 1991.
MLA ишлэлThe World of Learning 1991. 41. Mc Graw Hill, 1991.
Warning: These citations may not always be 100% accurate.