APA Баримт

(1991). The World of Learning 1991 (41.). Mc Graw Hill.

Чикаго маягийн жагсаалт

The World of Learning 1991. 41. Токуо: Mc Graw Hill, 1991.

MLA ишлэл

The World of Learning 1991. 41. Mc Graw Hill, 1991.

Warning: These citations may not always be 100% accurate.