India. Department of Environment. Environmental Information System (ENVIS). (1984). Directory of non-governmental organisations in environment. Environmental Information System (ENVIS), Department of Environment, Government of India.
Cytowanie według stylu Chicago (wyd. 17)India. Department of Environment. Environmental Information System (ENVIS). Directory of Non-governmental Organisations in Environment. New Delhi: Environmental Information System (ENVIS), Department of Environment, Government of India, 1984.
Cytowanie według stylu MLA (wyd. 9)India. Department of Environment. Environmental Information System (ENVIS). Directory of Non-governmental Organisations in Environment. Environmental Information System (ENVIS), Department of Environment, Government of India, 1984.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..