Sabrina Asrianty Putri
The Student motivation in learning English as a foreign language through discovery learning = Motivasi siswa dalam belajar Bahasa Inggris sebagai bahasa asing melalui pembelajaran penemuan
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2019
 UI - Tugas Akhir
Dakin, Julian
The language laboratory and language learning / Julian Dakin
Longman , 1975
 Buku Teks
Harris, David P.
Testing english as a second language
McGraw-Hill, 1969
 Buku Teks
Designing second language performance assessments
by John M. Norris ... [et. al.]
University of Hawaii Press, 1998
 Buku Teks
Quirk, Randolph
The linguist and the English language / Randolph Quirk
Edward Arnold, 1974
 Buku Teks