APA

(1971). Higher institute for machinebuilding mecanisation and electrification of agriculture - Rousse. : .

Chicago

1971. Higher institute for machinebuilding mecanisation and electrification of agriculture - Rousse. : .

Harvard

(1971). Higher institute for machinebuilding mecanisation and electrification of agriculture - Rousse. : .

MLA

Higher institute for machinebuilding mecanisation and electrification of agriculture - Rousse. : . 1971.