APA (7th ed.) Citation
(1990). American English I.Book 4.Tasks 73-96.
Chicago Style (17th ed.) Citation
American English I.Book 4.Tasks 73-96. Praha, 1990.
MLA (9th ed.) Citation
American English I.Book 4.Tasks 73-96. 1990.
Warning: These citations may not always be 100% accurate.