by Du Plessis, Jurie, Turpie, Jane, Carruthers, Jane, Van Niekerk, Hermias N., Diemont, Marius, Richardson, Philip R.K., Somers, Michael J., Tambling, Craig J., Behrens, Kevin G., Minnie, Liaan, Balfour, Dave, Kerley, Graham I.H.
Published in South African Journal of Science (01.03.2017)

by de Villiers, Marienne S., Richardson, Philip R. K., van Jaarsveld, Albert S.
Published in Journal of zoology (1987) (01.08.2003)

by Funston, Paul J., Mills, Micheal G. L., Richardson, Philip R. K., van Jaarsveld, Albert S.
Published in Journal of zoology (1987) (01.02.2003)

by SLIWA, ALEXANDER, RICHARDSON, PHILIP R.K
Published in Animal behaviour (01.07.1998)