Brook, P. (1968). The empty space (First edition.). Discus Books.
Cita Chicago Style (17a ed.)Brook, Peter. The Empty Space. First edition. New york: Discus Books, 1968.
Cita MLA (9a ed.)Brook, Peter. The Empty Space. First edition. Discus Books, 1968.
Precaución: Estas citas no son 100% exactas.