State Library of South Australia. Research Service & Morgan, J. R. (1968). Underground construction. State Library of South Australia.
Dyfyniad Arddull ChicagoState Library of South Australia. Research Service and Jillianne Rosemary Morgan. Underground Construction. Adelaide: State Library of South Australia, 1968.
Dyfyniad MLAState Library of South Australia. Research Service and Jillianne Rosemary Morgan. Underground Construction. State Library of South Australia, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.