Max Weber's "Author's Introduction" (1920) : a Master Clue to his Main Aims.
MLA
Nelson, Benjamin. Max Weber's "author's Introduction" (1920) : a Master Clue to His Main Aims. Austin, tx.: Wiley-Blackwell, 1974.
APA
Nelson, B. (1974). Max Weber's "Author's Introduction" (1920) : a Master Clue to his Main Aims. Austin, tx.: Wiley-Blackwell.
Chicago
Nelson, Benjamin, Max Weber's "author's Introduction" (1920): A Master Clue to His Main Aims. Austin, tx.: Wiley-Blackwell, 1974.