Pasion, D. S. (1982). Simplified bookkeeping. [s.n.].
Chicago Style aipamenaPasion, D S. Simplified Bookkeeping. Manila: [s.n.], 1982.
MLA aipamenaPasion, D S. Simplified Bookkeeping. [s.n.], 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.