APA (7th ed.) Citation

ProQuest (Firm). ProQuest American statistics digital collection. ProQuest.

Chicago Style (17th ed.) Citation

ProQuest (Firm). ProQuest American Statistics Digital Collection. [Ann Arbor, Mich.?]: ProQuest.

MLA (9th ed.) Citation

ProQuest (Firm). ProQuest American Statistics Digital Collection. ProQuest.

Warning: These citations may not always be 100% accurate.