Nababan, P.W.J <br/><br/>
The Teaching of the mother tongue in Indonesian secondary schools / 
P.W.J. Nababan. 
 - Paris :  UNESCO,  1983. 
 - 41 p. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>372.88 (910) =20 "1983" NAB.