APA

Harbans Lal, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics, Supervisor : Prof P B Bhattacharya & University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. (1977). Study of Quasi-commutative semigroups, regular ideals and radicals. : .

Chicago

Harbans Lal, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics, Supervisor : Prof P B Bhattacharya and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. 1977. Study of Quasi-commutative semigroups, regular ideals and radicals. : .

Harvard

Harbans Lal, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics, Supervisor : Prof P B Bhattacharya and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. (1977). Study of Quasi-commutative semigroups, regular ideals and radicals. : .

MLA

Harbans Lal, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics, Supervisor : Prof P B Bhattacharya and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. Study of Quasi-commutative semigroups, regular ideals and radicals. : . 1977.