Jemni, Monem and Sands, William A. (2011) Training principles in gymnastics. In: Jemni, Monem, (ed.) The science of gymnastics. Routledge / Taylor & Francis, Abingdon, UK, pp. 26-31. ISBN 978-0-415-54990-5 (hbk); 978-0-415-54991-2 (pbk); 978-0-203-87463-9 (eBook)