APA
India. Planning Commission. Programme Evaluation Organisatio, . (1968). Study of the extension of plant protection measures in agricultural production. New Delhi: Programme Evaluation Organisation.
Chicago
India. Planning Commission. Programme Evaluation Organisatio, . 1968. Study of the extension of plant protection measures in agricultural production. New Delhi: Programme Evaluation Organisation.
Harvard
India. Planning Commission. Programme Evaluation Organisatio, . (1968). Study of the extension of plant protection measures in agricultural production. New Delhi: Programme Evaluation Organisation.
MLA
India. Planning Commission. Programme Evaluation Organisatio, . Study of the extension of plant protection measures in agricultural production. New Delhi: Programme Evaluation Organisation. 1968.