By Scholastic
By Catherine Veitch
By Ruth Owen
By Bodden, Valerie
By Percy, J.P.
By Penner, Lucille Recht, Johnson, Pamela
By Sally Morgan
By Backshall, Steve
By Thomson, Ruth
By Morgan, Sally
By Zpevak, Jaromir, Kindlova, Elizabeth
By Whittaker, N
By Manning Mick
By N, Whittaker
By National Geographic Kids
By Greg Pyres
By Durant, Alan, Rickerty, Simon
By DK
By Bishop, Nic
By Brian, Morse
By Weber, Belinda
By Huseby, Victoria
By Taylor, David
By Jarman, Julia
By Smith, Robin, Peacock, Graham
By Johnsey, Rob
By BBC
By Harper, Clive, Randell, Beverley
By Ganeri, Anita, Phillips, Mike
By Anna Claybourne, Gill Harvey, Claybourne, Anna, Harvey, Gill