Bakeng sa tlhahlobo e ngotsoeng ka botlalo, e ngotsoeng ke YBOP, le moprofesa oa kelello, bona: Liphello Tse Ikhethang tsa Litšoantšo Tsa Bootsoa Tlhahiso (2008), Hald GM, Nlam Malamuth (PCES)
Bakeng sa tlhahlobo e ngotsoeng ka botlalo, e ngotsoeng ke YBOP, le moprofesa oa kelello, bona: Liphello Tse Ikhethang tsa Litšoantšo Tsa Bootsoa Tlhahiso (2008), Hald GM, Nlam Malamuth (PCES)