APA
RONALD FLORENCE, . (1994). THE PERFECT MACHINE. NEW YORK: HARPERCOLLINS PUBLISHERS.
Chicago
RONALD FLORENCE, . 1994. THE PERFECT MACHINE. NEW YORK: HARPERCOLLINS PUBLISHERS.
Harvard
RONALD FLORENCE, . (1994). THE PERFECT MACHINE. NEW YORK: HARPERCOLLINS PUBLISHERS.
MLA
RONALD FLORENCE, . THE PERFECT MACHINE. NEW YORK: HARPERCOLLINS PUBLISHERS. 1994.