Gaya APA
Tuuk, H, V, D.
(1971).
A Grammar of Toba Batak
.
The Hague:
Martinus Nijhoff.
Gaya MLA
Tuuk, H.N., Van, Der.
"A Grammar of Toba Batak".
The Hague:
Martinus Nijhoff,
1971.
Text.