APA
American Academy of Political And Social Science, . (1930). Second industrial revolution and its significance. Philadelphia: American Academy of Political and Social Science.
Chicago
American Academy of Political And Social Science, . 1930. Second industrial revolution and its significance. Philadelphia: American Academy of Political and Social Science.
Harvard
American Academy of Political And Social Science, . (1930). Second industrial revolution and its significance. Philadelphia: American Academy of Political and Social Science.
MLA
American Academy of Political And Social Science, . Second industrial revolution and its significance. Philadelphia: American Academy of Political and Social Science. 1930.