APA
United Nations, . (1966). Studies in petrochemicals presented at the United Nations interregional conference on the development of petrochemical industries in developing countries (Vol.II), Teheran, Iran 16-30 November 1964. New York: The Author.
Chicago
United Nations, . 1966. Studies in petrochemicals presented at the United Nations interregional conference on the development of petrochemical industries in developing countries (Vol.II), Teheran, Iran 16-30 November 1964. New York: The Author.
Harvard
United Nations, . (1966). Studies in petrochemicals presented at the United Nations interregional conference on the development of petrochemical industries in developing countries (Vol.II), Teheran, Iran 16-30 November 1964. New York: The Author.
MLA
United Nations, . Studies in petrochemicals presented at the United Nations interregional conference on the development of petrochemical industries in developing countries (Vol.II), Teheran, Iran 16-30 November 1964. New York: The Author. 1966.