MacDonald 2005, 71쪽. harv error: 대상 없음: CITEREFMacDonald2005 (help)MacDonald, Ian (2005). 《Revolution in the Head: The Beatles' Records and the Sixties》 Seco Revis판. London: Pimlico (Rand). ISBN1-84413-828-3.
MacDonald 2005, 72쪽. harv error: 대상 없음: CITEREFMacDonald2005 (help)MacDonald, Ian (2005). 《Revolution in the Head: The Beatles' Records and the Sixties》 Seco Revis판. London: Pimlico (Rand). ISBN1-84413-828-3.