奥莫语族AltaMira Press Hayward, Richard J., ed. 1990. Omotic Language Studies. London: School of Oriental and African Studies. Hayward, Richard J. 2003. Omotic:
國際研究協會Haftendorn)(1990-1991) Maurice East(英语:Maurice East)(1991-1992) Hayward R. Alker, Jr.(英语:Hayward Alker)(1992-1993) Charles Kegley, Jr.(英语:Charles Kegley, Jr
阿法爾語Studies, University of London. Richard J. Hayward. 1998. "Qafar (West Cushitic)", Handbook of Morphology. Ed. A. Spencer & A. Zwicky. Oxford: Blackwell.
次闭央不圆唇元音1984, ISBN 0-7083-0861-9 Hayward, Katrina; Hayward, Richard J., Amharic, Handbook of the International Phonetic Association: A guide to the use of the
軟體動物皰疹病毒科基因組為不分段的線形DNA,長度約為134kb。 病毒主题 Davison, Andrew J.; Eberle, Richard; Ehlers, Bernhard; Hayward, Gary S.; McGeoch, Duncan J.; Minson, Anthony C.; Pellett