Apitzsch, T. Julkaistu 2016 “...educational training...”
Gerlach, E., Brettschneider, W.-D. Julkaistu 2013 “...educational training...”
Spilker, H. J. Julkaisussa Leistungssport (1975) “...educational training...”
Czingon, H. Julkaisussa Leichtathletiktraining (2010) “...educational training...”
W. Schmidt, R. Zimmer, K. Völker Julkaistu 2008 “...educational training...”