Cita APA (7a ed.)

Healy, P. R., & Head, J. M. (1984). Construction over abandoned mine workings. Construction Industry Research and Information Association.

Cita Chicago Style (17a ed.)

Healy, P. R., y J. M. Head. Construction over Abandoned Mine Workings. London: Construction Industry Research and Information Association, 1984.

Cita MLA (9a ed.)

Healy, P. R., y J. M. Head. Construction over Abandoned Mine Workings. Construction Industry Research and Information Association, 1984.