APA

Vadetsky Y. V., Gusman M., Forrest J., Drilling Techniques Institute, World Petroleum Congress (11th. : 1983 : London), Gusman M., Forrest J. & Drilling Techniques Institute.Bottom hole screw motors for oil and gas drilling. : .

Chicago

Vadetsky Yu V, Gusman M.T, Forrest J, Drilling Techniques Institute, World Petroleum Congress (11th. : 1983 : London), Gusman M.T, Forrest J and Drilling Techniques Institute.Bottom hole screw motors for oil and gas drilling. : .

Harvard

Vadetsky Y. V., Gusman M., Forrest J., Drilling Techniques Institute, World Petroleum Congress (11th. : 1983 : London), Gusman M., Forrest J. and Drilling Techniques Institute.Bottom hole screw motors for oil and gas drilling. : .

MLA

Vadetsky Yu V, Gusman M.T, Forrest J, Drilling Techniques Institute, World Petroleum Congress (11th. : 1983 : London), Gusman M.T, Forrest J and Drilling Techniques Institute.: . .