APA

Marafi M., Stanislaus A., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. & Stanislaus A.Spent catalyst handling and utilization. : .

Chicago

Marafi M, Stanislaus A, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Stanislaus A.Spent catalyst handling and utilization. : .

Harvard

Marafi M., Stanislaus A., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. and Stanislaus A.Spent catalyst handling and utilization. : .

MLA

Marafi M, Stanislaus A, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Stanislaus A.: . .