Indian standards institution . ISI. (1982). Specification for tractor operated disc ploughs,IS: 10233-1982 (1.). ISI.
استشهاد بنمط شيكاغوIndian standards institution . ISI. Specification for Tractor Operated Disc Ploughs,IS: 10233-1982. 1. : ISI, 1982.
MLA استشهادIndian standards institution . ISI. Specification for Tractor Operated Disc Ploughs,IS: 10233-1982. 1. ISI, 1982.