APA aipamena

SHARMA O.P. (1977). RAILWAYS,BRIDGES &TONNELS. KATSON PUB.HOUSE.

Chicago Style aipamena

SHARMA O.P. RAILWAYS,BRIDGES &TONNELS. LUDHIANA: KATSON PUB.HOUSE, 1977.

MLA aipamena

SHARMA O.P. RAILWAYS,BRIDGES &TONNELS. KATSON PUB.HOUSE, 1977.