Santo-Novak, Debra A; Grissom, Kathy R; Powers, Richard E (2001-02-01). "Mary Starke Harper "I Love Doing the Impossible"". Journal of Gerontological Nursing. 27 (2): 12–14. doi:10.3928/0098-9134-20010201-09. ISSN0098-9134. PMID11915261.
Santo-Novak, Debra A; Grissom, Kathy R; Powers, Richard E (2001-02-01). "Mary Starke Harper "I Love Doing the Impossible"". Journal of Gerontological Nursing. 27 (2): 12–14. doi:10.3928/0098-9134-20010201-09. ISSN0098-9134. PMID11915261.
Santo-Novak, Debra A; Grissom, Kathy R; Powers, Richard E (2001-02-01). "Mary Starke Harper "I Love Doing the Impossible"". Journal of Gerontological Nursing. 27 (2): 12–14. doi:10.3928/0098-9134-20010201-09. ISSN0098-9134. PMID11915261.