Luxton, David D.; Thomas, Elissa K.; Chipps, Joan; Relova, Rona M.; Brown, Daphne; McLay, Robert; Lee, Tina T.; Nakama, Helenna et al. (March 2014). “Caring letters for suicide prevention: implementation of a multi-site randomized clinical trial in the U.S. military and Veteran Affairs healthcare systems”. Contemporary Clinical Trials37 (2): 252–260. doi:10.1016/j.cct.2014.01.007. ISSN1559-2030. PMID24473106.
Luxton, David D.; Thomas, Elissa K.; Chipps, Joan; Relova, Rona M.; Brown, Daphne; McLay, Robert; Lee, Tina T.; Nakama, Helenna et al. (March 2014). “Caring letters for suicide prevention: implementation of a multi-site randomized clinical trial in the U.S. military and Veteran Affairs healthcare systems”. Contemporary Clinical Trials37 (2): 252–260. doi:10.1016/j.cct.2014.01.007. ISSN1559-2030. PMID24473106.
Luxton, David D.; Thomas, Elissa K.; Chipps, Joan; Relova, Rona M.; Brown, Daphne; McLay, Robert; Lee, Tina T.; Nakama, Helenna et al. (March 2014). “Caring letters for suicide prevention: implementation of a multi-site randomized clinical trial in the U.S. military and Veteran Affairs healthcare systems”. Contemporary Clinical Trials37 (2): 252–260. doi:10.1016/j.cct.2014.01.007. ISSN1559-2030. PMID24473106.