Track Group Strips Johnson of World Records : His 100-Meter, 60-Meter Marks Erased Because He Admitted Using Steroids. Los Angeles Times. 1989-09-06. Dostupné online [cit. 2016-11-22]. ISSN0458-3035. (anglicky)
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KIDD, Bruce. The Canadian Encyclopedia : Track and Field [online]. [cit. 2016-11-22]. Dostupné online. (anglicky)
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Track Group Strips Johnson of World Records : His 100-Meter, 60-Meter Marks Erased Because He Admitted Using Steroids. Los Angeles Times. 1989-09-06. Dostupné online [cit. 2016-11-22]. ISSN0458-3035. (anglicky)