APA

Drilling and Completion Committee, Petroleum Industry Training Sevice (PITS) & Petroleum Industry Training Sevice (PITS). (2002). Critical sour drilling. Calgary, Alberta: Petroleum Industry Training Service (PITS).

Chicago

Drilling and Completion Committee, Petroleum Industry Training Sevice (PITS) and Petroleum Industry Training Sevice (PITS). 2002. Critical sour drilling. Calgary, Alberta: Petroleum Industry Training Service (PITS).

Harvard

Drilling and Completion Committee, Petroleum Industry Training Sevice (PITS) and Petroleum Industry Training Sevice (PITS). (2002). Critical sour drilling. Calgary, Alberta: Petroleum Industry Training Service (PITS).

MLA

Drilling and Completion Committee, Petroleum Industry Training Sevice (PITS) and Petroleum Industry Training Sevice (PITS). Critical sour drilling. Calgary, Alberta: Petroleum Industry Training Service (PITS). 2002.