By Brian S. Everitt, Professor Til Wykes
By Larousse Editorial
By Food and Drug Administration
By Antonia Clare, JJ Wilson, J Wilson
By Institute of Kiswahili Research, Tanzania
By Hawkins, Joyce
By Sabina Ostrowska
By D. Adamson
By John Wells
By Henry Hitchings
By Collins Dictionaries
By Susan Elliott, Barry Turner
By Jim Scrivener
By Victoria Pybus
By Lonely Planet
By Bill Bryson
By Nigel Rees
By Judith S. Neaman, Carole G. Silver
By Jane Wightwick, Mahmoud Gaffar
By McGraw Hill
By Collins Dictionaries, Collins Puzzles
By Eric Zandona
By MERRIAM-WEBSTER