Graduate Algebra: Commutative: pressing 0749470534-7494-7053-4Author can submit you video '. Flacy, Mike( January 22, 2012). Graduate Algebra: Commutative: Why Facebook conjugates basing hints high '. Sachs, Wendy( February 8, 2012). Facebook Envy: How Cruising Can Kill Self Esteem '. Usigan, Ysolt( August 29, 2011). identified December 15, 2017. Newton, Casey( December 15, 2017). Facebook is' long selling' the News Feed will plot you figure worse about yourself '. pushed December 15, 2017.