World Executive's Digest Library. (1981). Management Japanese style. Manila: World Executive's Digest Library.
Chicago Style aipamenaWorld Executive's Digest Library. Management Japanese Style. Manila: World Executive's Digest Library, 1981.
MLA aipamenaWorld Executive's Digest Library. Management Japanese Style. Manila: World Executive's Digest Library, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.