ɪf ðə sˈoːɹsᵻz ɑːɹ nˌɑːt klˈɪɹ ɐbˌaʊt ðə pɹɪsˈaɪs dˈeɪts, ˈiːðɚ ðə mˈʌnθ ɔːɹ ðə dˈeɪt ʌv pˌʌblɪkˈeɪʃən ɪz ˈɪndᵻkˌeɪɾᵻd.
If the sources are not clear about the precise dates, either the month or the date of publication is indicated.