„Ancestry.com”. Архивирано из оригинала 24. 2. 2021. г. „Born 1922: age on April 10, 1940, in Hamilton County, Ohio, 91–346 (enumeration district), 2552 Warsaw Avenue, was 18 years old as per 1940 United States Census records; name transcribed incorrectly as "Daris Kappelhoff", included with mother Alma and brother Paul, all with same surname”CS1 одржавање: Формат датума (веза). (registration required; initial 14-day free pass)
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Elber, Lynn (2. 4. 2017). „Birthday surprise for ageless Doris Day: She's actually 95”. Associated Press. Архивирано из оригинала 4. 4. 2017. г. Приступљено 2. 4. 2017. „A copy of Day's birth certificate, obtained by The Associated Press from Ohio's Office of Vital Statistics, settles the issue: Doris Mary Anne Kappelhoff, her pre-fame name, was born on April 3, 1922, making her 95. Her parents were Alma and William Kappelhoff of Cincinnati.”CS1 одржавање: Формат датума (веза)
Elber, Lynn (2. 4. 2017). „Birthday surprise for ageless Doris Day: She's actually 95”. Associated Press. Архивирано из оригинала 4. 4. 2017. г. Приступљено 2. 4. 2017. „A copy of Day's birth certificate, obtained by The Associated Press from Ohio's Office of Vital Statistics, settles the issue: Doris Mary Anne Kappelhoff, her pre-fame name, was born on April 3, 1922, making her 95. Her parents were Alma and William Kappelhoff of Cincinnati.”CS1 одржавање: Формат датума (веза)
„Ancestry.com”. Архивирано из оригинала 24. 2. 2021. г. „Born 1922: age on April 10, 1940, in Hamilton County, Ohio, 91–346 (enumeration district), 2552 Warsaw Avenue, was 18 years old as per 1940 United States Census records; name transcribed incorrectly as "Daris Kappelhoff", included with mother Alma and brother Paul, all with same surname”CS1 одржавање: Формат датума (веза). (registration required; initial 14-day free pass)
