Balmforth, R. (1928). The problem-play and its influence on modern thought and life. Allan & Unwin.
Citazione stile Chigago Style (17a edizione)Balmforth, Ramsden. The Problem-play and Its Influence on Modern Thought and Life. London: Allan & Unwin, 1928.
Citatione MLA (8a ed.)Balmforth, Ramsden. The Problem-play and Its Influence on Modern Thought and Life. Allan & Unwin, 1928.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.