APA (7. basım) Alıntı

Graham Holdings Company (formerly The Washington Post Company) MarketLine Company Profile. MarketLine, a Progressive Digital Media business.

Chicago Style (17. basım) Atıf

Graham Holdings Company (formerly The Washington Post Company) MarketLine Company Profile. MarketLine, a Progressive Digital Media business.

MLA (9th ed.) Atıf

Graham Holdings Company (formerly The Washington Post Company) MarketLine Company Profile. MarketLine, a Progressive Digital Media business.

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