APA

Institute of Petroleum I., . (1991). Standard methods for analysis and testing of petroelum and related products 1991. Londres: Institute of Petroleum, IP.

Chicago

Institute of Petroleum IP, . 1991. Standard methods for analysis and testing of petroelum and related products 1991. Londres: Institute of Petroleum, IP.

Harvard

Institute of Petroleum I., . (1991). Standard methods for analysis and testing of petroelum and related products 1991. Londres: Institute of Petroleum, IP.

MLA

Institute of Petroleum IP, . Standard methods for analysis and testing of petroelum and related products 1991. Londres: Institute of Petroleum, IP. 1991.