Linda Darling-Hammond, Nicole Ramos-Beban, Rebecca Padnos Altamirano, Maria E. Hyler (2016). “Be the Change: Reinventing School for Student Success”, p.114, Teachers College Press
Oscar Wilde, Russell Jackson, Joseph Bristow, Ian Small (2000). “The Complete Works of Oscar Wilde: The picture of Dorian Gray : the 1890 and 1891 texts”, p.183, Oxford University Press on Demand
Sir William Temple (1814). “The Works of Sir William Temple, Bart: An essay upon the advancement of trade in Ireland. Of popular discontents. An introduction to the history of England. Of gardening. An essay upon the cure of the gout by moxa. Of health and long life. Of heroic virtue. Of poetry. An essay upon ancient and modern learning. Thoughts upon reviewing that essay. Of the excesses of grief. Of the different conditions of life and fortune. Heads of an essay on conversation. Poetry”, p.125