Inggris, T. P. P. S. (1991). Reading: Upper-intermediate study guide. LP3B Universitas Terbuka.
Chicago Style (17th ed.) CitationInggris, Tim Penghimpun Program Studi. Reading: Upper-intermediate Study Guide. LP3B Universitas Terbuka, 1991.
MLA (8th ed.) CitationInggris, Tim Penghimpun Program Studi. Reading: Upper-intermediate Study Guide. LP3B Universitas Terbuka, 1991.
Warning: These citations may not always be 100% accurate.