Atthreya, N. (1967). Sure step to supervisory positions. MMC.
Chicago Style aipamenaAtthreya, N.H. Sure Step to Supervisory Positions. Bombay: MMC, 1967.
MLA aipamenaAtthreya, N.H. Sure Step to Supervisory Positions. MMC, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.