Farrell, Warren (2005). «3». Why Men Earn More: The Startling Truth Behind the Pay Gap--and What Woman Can Do About It(en inglés). Nueva York: AMACOM. pp.44-47. ISBN0-8144-7210-9. «Among Jobs Requiring Little Education, Those That Expose You to the Sleet and Heat Pay More Than Those That Are Indoors and Neat (FedEx Deliverer vs. Receptionist)».
Farrell, Warren (2005). «4». Why Men Earn More: The Startling Truth Behind the Pay Gap--and What Woman Can Do About It(en inglés). Nueva York: AMACOM. p.78. ISBN0-8144-7210-9. «People Who Get Higher Pay Work More Hours—And It Makes a Big Difference».
Farrell, Warren (2005). «5». Why Men Earn More: The Startling Truth Behind the Pay Gap--and What Woman Can Do About It(en inglés). Nueva York: AMACOM. p.93. ISBN0-8144-7210-9. «People Who Get Higher Pay Are More Willing to Relocate— Especially to Undesirable Locations at the Company’s Behest».
Farrell, Warren (1994) [1993]. «Introduction» [Introducción]. The Myth of Male Power[El mito del poder masculino](en inglés) (2° edición). Londres: Fourth State. p.2. ISBN1-85702-211-4. Consultado el 2 de junio de 2015. «Almost overnight my standing ovations disintegrated. After each speaking engagement, I was no longer receiving three or four new requests to speak. My financial security was drying up.»