Wiedemann 1996, p. 223. "It is useless to date the turning-point to before the death of Antonia (two months after his accession), an illness in the autumn... which is supposed to have affected his brain, or the death of his sister Drusilla". Wiedemann, T.E.J. (1996). "Tiberius to Nero". In Bowman, Alan K; et al. (eds.). The Augustan Empire, 43 BC–AD 69. Cambridge Ancient History. Vol. 10 (2nd ed.). Cambridge University Press. pp. 198–255. ISBN0-521-26430-8.
Barrett 2015, p. 269: Mary Smallwood "states as a fact, without explanation, that he was buried in the [Augustan] mausoleum". See Smallwood, E.M. (1970). Philonis Alexandrini. Legatio ad Gaium (2nd ed.). Leiden: Brill. p. 317.. Barrett finds the interment of Caligula's remains in the Augustan mausoleum "unlikely, but not impossible". Barrett 2015, p. 167. Barrett, Anthony A. (2015). Caligula: the abuse of power (2nd ed.). London: Routledge. ISBN978-1-315-72541-3. Barrett, Anthony A. (2015). Caligula: the abuse of power (2nd ed.). London: Routledge. ISBN978-1-315-72541-3.
Wood, Susan (1995). "Diva Drusilla Panthea and the sisters of Caligula". American Journal of Archaeology. 99 (3): 436–439. doi:10.2307/506945. ISSN0002-9114. JSTOR506945.
Sheaffer-Jones, Caroline (2012). "A Deconstructive Reading of Albert Camus' Caligula". Australian Journal of French Studies. 49 (1): 31–42. doi:10.3828/AJFS.2012.3. ISSN0004-9468.
Wood, Susan (1995). "Diva Drusilla Panthea and the sisters of Caligula". American Journal of Archaeology. 99 (3): 436–439. doi:10.2307/506945. ISSN0002-9114. JSTOR506945.
Wardle, David (2007). "Caligula's Bridge of Boats – AD 39 or 40?". Historia: Zeitschrift für Alte Geschichte. 56 (1): 118–120. JSTOR25598379.
Bicknell, Peter (1968). "The emperor Gaius' military activities in AD 40". Historia: Zeitschrift für Alte Geschichte. 17 (4): 496–505. ISSN0018-2311. JSTOR4435047.
Davies, R (1966). "The 'abortive invasion' of Britain by Gaius". Historia: Zeitschrift für Alte Geschichte. 15 (1): 124–128. ISSN0018-2311. JSTOR4434915.
Sigman, Marlene C (1977). "The Romans and the indigenous tribes of Mauritania Tingitana". Historia: Zeitschrift für Alte Geschichte. 26 (4): 415–439. ISSN0018-2311. JSTOR4435574.
Benediktson, D Thomas (1989). "Caligula's madness: madness or interictal temporal lobe epilepsy?". The Classical World. 82 (5): 370–375. doi:10.2307/4350416. ISSN0009-8418. JSTOR4350416.
Benediktson 1991, pp. 159–161. Benediktson, D. Thomas (1991). "Caligula's phobias and philias: fear of seizure?". The Classical Journal. 87 (2): 159–163. ISSN0009-8353. JSTOR3297970.
Wood, Susan (1995). "Diva Drusilla Panthea and the sisters of Caligula". American Journal of Archaeology. 99 (3): 436–439. doi:10.2307/506945. ISSN0002-9114. JSTOR506945.
Bicknell, Peter (1968). "The emperor Gaius' military activities in AD 40". Historia: Zeitschrift für Alte Geschichte. 17 (4): 496–505. ISSN0018-2311. JSTOR4435047.
Davies, R (1966). "The 'abortive invasion' of Britain by Gaius". Historia: Zeitschrift für Alte Geschichte. 15 (1): 124–128. ISSN0018-2311. JSTOR4434915.
Sigman, Marlene C (1977). "The Romans and the indigenous tribes of Mauritania Tingitana". Historia: Zeitschrift für Alte Geschichte. 26 (4): 415–439. ISSN0018-2311. JSTOR4435574.
Benediktson, D Thomas (1989). "Caligula's madness: madness or interictal temporal lobe epilepsy?". The Classical World. 82 (5): 370–375. doi:10.2307/4350416. ISSN0009-8418. JSTOR4350416.
Benediktson 1991, pp. 159–161. Benediktson, D. Thomas (1991). "Caligula's phobias and philias: fear of seizure?". The Classical Journal. 87 (2): 159–163. ISSN0009-8353. JSTOR3297970.
Sheaffer-Jones, Caroline (2012). "A Deconstructive Reading of Albert Camus' Caligula". Australian Journal of French Studies. 49 (1): 31–42. doi:10.3828/AJFS.2012.3. ISSN0004-9468.