DEVERELL C S. (1973). SUPERVISORY DEVELOPMENT. G BELL & SONS.
Chicago Style aipamenaDEVERELL C S. SUPERVISORY DEVELOPMENT. LONDON: G BELL & SONS, 1973.
MLA aipamenaDEVERELL C S. SUPERVISORY DEVELOPMENT. G BELL & SONS, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.