Tarigan, Henry Guntur, author
Angkasa, 1990
Buku Teks
Bulan Bintang, 1975
Buku Teks
Ag. Bambang Setiyadi, author
Graha Ilmu, 2018
Buku Teks
Brown, H. Douglas, author
Pearson Education, 2008
Buku Teks
Lumban Tobing, Christina Ruth Elizabeth, examiner
1953
Buku Klasik