APA
Jacks L. P., . (1930). The inner sentinel: a study of ourselves and of something more. New York and London: Harper & brothers.
Chicago
Jacks L P, . 1930. The inner sentinel: a study of ourselves and of something more. New York and London: Harper & brothers.
Harvard
Jacks L. P., . (1930). The inner sentinel: a study of ourselves and of something more. New York and London: Harper & brothers.
MLA
Jacks L P, . The inner sentinel: a study of ourselves and of something more. New York and London: Harper & brothers. 1930.
文字出版細節:New York and London, Harper & brothers, 1930.說明: v p., 1 l., 183 p. 20 cm主題: 美國國會圖書館分類法: 
BK