Cita APA (7th ed.)

Chugh, C., Sharma, V., & Steele, K. (1996). Design criteria for drill rigs: Equipment and drilling techniques. A.A. Balkema.

Cita Chicago (17th ed.)

Chugh, C.P, V.M Sharma, i Ken Steele. Design Criteria for Drill Rigs: Equipment and Drilling Techniques. Rotterdam: A.A. Balkema, 1996.

Cita MLA (9th ed.)

Chugh, C.P, et al. Design Criteria for Drill Rigs: Equipment and Drilling Techniques. A.A. Balkema, 1996.