povey , p. . ^ mason , p. . ^ blake , p. . ^ blake , pp. – : (secondary source); mason , pp. – : (primary source). ^ povey , pp. – . ^ mason , pp. – , – : on o'rourke becoming the band's manager. ^ schaffner , pp. – . ^ blake , pp. – . ^ blake , pp. , , , , , , , : after barrett's departure, the burden...