* {{cite book| last=Lewisohn| first=Mark| year=1988| author-link=Mark Lewisohn| title=The Beatles Recording Sessions| publisher=[[Harmony Books]]| location=New York| isbn=0-517-57066-1 }}
* {{Cite book |last=Lewisohn |first=Mark |year=1993 |author-link=Mark Lewisohn |title=The Complete Beatles Cronicle |publisher=[[Pyramid Books]] |location=London |isbn=1-855-10021-5 }}
* {{cite book |last=MacDonald |first=Ian |year=2005 |author-link=Ian MacDonald |title=Revolution in the Head: The Beatles' Records and the Sixties |edition=Second Revised |publisher=Pimlico (Rand) |location=London |isbn=1-84413-828-3 }}
* {{cite book |last=Miles |first=Barry |year=1997 |author-link=Barry Miles |title=Paul McCartney: Many Years From Now |publisher=[[Henry Holt and Company]] |location=New York |isbn=0-8050-5249-6 |url=https://archive.org/details/paulmccartneyman00mile }}
* {{cite web| last=Pollack| first=Alan W.| author-link=Alan W. Pollack| title=Notes on "Ask Me Why"| date=27. marts 2001| work=Notes on Series| url=http://www.icce.rug.nl/~soundscapes/DATABASES/AWP/amw.shtml }}
Musik