Lew, T. (1976). Deep-underground, lined, horizontal, circular openings in rock. Civil Engineering Laboratory.
Citazione stile Chigago Style (17a edizione)Lew, T.K. Deep-underground, Lined, Horizontal, Circular Openings in Rock. Port Hueneme, Calif.: Civil Engineering Laboratory, 1976.
Citatione MLA (8a ed.)Lew, T.K. Deep-underground, Lined, Horizontal, Circular Openings in Rock. Civil Engineering Laboratory, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.