1. THE ABUNDANCE AND MOVEMENTS OF LUDWIG'S BUSTARD NEOTIS LUDWIGII
2. Allan DG. 1997. Ludwig’s Bustard Neotis ludwigii. In: Harrison JA, Allan DG, Underhill LG, Herremans M, Tree AJ, Parker V, Brown CJ (eds), The Atlas of southern African birds. Johannesburg: BirdLife South Africa.
3. Allan DG. 2005b. Denham’s Bustard Neotis denhami. In: Hockey PAR, Dean WRJ, Ryan PG (eds), Roberts’ birds of southern Africa (7th edn). Cape Town: The Trustees of the John Voelcker Bird Book Fund. pp 291–293.
4. Allan DG. 2005a. Ludwig’s Bustard Neotis ludwigii. In: Hockey PAR, Dean WRJ, Ryan PG (eds), Roberts’ birds of southern Africa (7th edn). Cape Town: The Trustees of the John Voelcker Bird Book Fund. pp 293–294.
5. Anderson M. 2000. Ludwig’s Bustard Neotis ludwigii. In: Barnes KN (ed.), The Eskom Red Data Book of birds of South Africa, Lesotho and Swaziland. Johannesburg: BirdLife South Africa. pp 105–107.