Gianakaris, C.J.
Houghton Miffiln, 1975
Buku Teks
Coldewey, John C.
Prentice-Hall, 2001
Buku Referensi
Situmorang, Sitor, 1923-2014
Pustaka Rakyat,
Koleksi Publik
Situmorang, Sitor, 1923-2014
Pustaka Rakyat, [date of publication not identified]
Buku Teks
Atja, translator
Lembaga Bahasa dan Sedjarah, 1970
Buku Teks