מקורות והערות

. DeSilver, D . ( 2017, Janu ary 4 ) . 5 f acts about t he mini mum wage Retrieved November 19, 2018, from http : / / www . pewresearch . org / fact‑tank / 2017 / 01 / 04 / 5 ‑facts‑about‑theminimum‑wage / Desjardins, J . ( 2016, September 8 ) . Visualizing the size of the U . S . national debt . Retrieved November 19, 2018, from http : / / money . visualcapitalist . com / visualizing‑size‑u‑snational‑debt / Drucker, P . F . ( 1954 ) . The practice of management : A study of the most important function in American society . New York : Harper & Brothers . Gallup . ( 2017 ) . State of the global workplace . New York : Gallup Press . Kamp, K . ( 2013, September 20 ) . By the numbers : The incredibly shrinking American middle class . Retrieved November 19, 2018, from https : / / billmoyers . com / 2013 / 09 / 20 / by‑thenumbers‑the‑incredibly‑shrinking‑american‑middle‑class / Keng, C . ( 2014, June 22 ) . Employees who stay in companies longer than two years get paid 50 % less . Retrieved ...  To the book