APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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