Baker, Ann
Tree or three? An elementary pronunciation course
Cambridge University Press, 1982
 Buku Teks SO
Baker, Ann
Tree or three? An elementary pronunciation course
Cambridge University Press, 1982
 Buku Teks SO
Baker, Ann
Introducing English pronunciation : a teacher's guide to Tree or Three? and Ship or Sheep?
Cambridge University Press, 1982
 Buku Teks
Potapova, Nina F.
Russian elementary course; Book 1
Foreign Languages Publishing House, 1959
 Buku Teks
McKeague, Charles P., 1946-
Elementary and intermediate algebra : a combined course
Brooks/Cole Cengage Learning, 2012
 Buku Teks