APA

Parsons A., Ingram J., Inglis J., Aveyard P., Johnstone E., Brown K., Franklin M. & Bermudez I. (20090616). A proof of concept randomised placebo controlled factorial trial to examine the efficacy of St John's wort for smoking cessation and chromium to prevent weight gain on smoking cessation. : Drug and alcohol dependence.

Chicago

Parsons Amanda, Ingram Jackie, Inglis Jennie, Aveyard Paul, Johnstone Elaine, Brown Karen, Franklin Mike and Bermudez Isabel. 20090616. A proof of concept randomised placebo controlled factorial trial to examine the efficacy of St John's wort for smoking cessation and chromium to prevent weight gain on smoking cessation. : Drug and alcohol dependence.

Harvard

Parsons A., Ingram J., Inglis J., Aveyard P., Johnstone E., Brown K., Franklin M. and Bermudez I. (20090616). A proof of concept randomised placebo controlled factorial trial to examine the efficacy of St John's wort for smoking cessation and chromium to prevent weight gain on smoking cessation. : Drug and alcohol dependence.

MLA

Parsons Amanda, Ingram Jackie, Inglis Jennie, Aveyard Paul, Johnstone Elaine, Brown Karen, Franklin Mike and Bermudez Isabel. A proof of concept randomised placebo controlled factorial trial to examine the efficacy of St John's wort for smoking cessation and chromium to prevent weight gain on smoking cessation. : Drug and alcohol dependence. 20090616.