Citace podle APA (7th ed.)

Philippines (Republic). Office of the President. Presidential Economic Staff. (1967). Provincial profiles: Ilocos Sur. PES.

Citace podle Chicago (17th ed.)

Philippines (Republic). Office of the President. Presidential Economic Staff. Provincial Profiles: Ilocos Sur. Manila: PES, 1967.

Citace podle MLA (9th ed.)

Philippines (Republic). Office of the President. Presidential Economic Staff. Provincial Profiles: Ilocos Sur. PES, 1967.

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