Sewell, Anna
Holt, Rinehart and Winston, 1961
Buku Referensi
Sewell, R.
Asian Educational Services, 1987
Buku Teks
Riany Dwi Delphia
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
UI - Tesis Membership
Sewell, Granville
Ellis Horwood , 1990
Buku Teks SO
Tolstoy, Leo, , 1828-1910
Everyman`s Library, 1992
Buku Teks