APA

Pushpavathy K.K, University of Delhi. Faculty of Science. Department of Botany, Prof Hardev Singh Supervisor & University of Delhi. Faculty of Science. Department of Botany. (1968). Studies on three rusts Puccinia butleri, Melampsora helioscopiae and Puccinia graminis agropyri. : .

Chicago

Pushpavathy K.K, University of Delhi. Faculty of Science. Department of Botany, Prof Hardev Singh Supervisor and University of Delhi. Faculty of Science. Department of Botany. 1968. Studies on three rusts Puccinia butleri, Melampsora helioscopiae and Puccinia graminis agropyri. : .

Harvard

Pushpavathy K.K, University of Delhi. Faculty of Science. Department of Botany, Prof Hardev Singh Supervisor and University of Delhi. Faculty of Science. Department of Botany. (1968). Studies on three rusts Puccinia butleri, Melampsora helioscopiae and Puccinia graminis agropyri. : .

MLA

Pushpavathy K.K, University of Delhi. Faculty of Science. Department of Botany, Prof Hardev Singh Supervisor and University of Delhi. Faculty of Science. Department of Botany. Studies on three rusts Puccinia butleri, Melampsora helioscopiae and Puccinia graminis agropyri. : . 1968.