Schuller, R. (1989). Success is never ending failure is never final. Orient.
Citazione stile Chigago Style (17a edizione)Schuller, Robert. Success Is Never Ending Failure Is Never Final. Bombay: Orient, 1989.
Citatione MLA (9a ed.)Schuller, Robert. Success Is Never Ending Failure Is Never Final. Orient, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.