Παραπομπή σε μορφή APA (7η εκδ.)

Gram, I., Lukanova, A., Brill, I., Braaten, T., Lund, E., Lundin, E., . . . Sánchez, M. (2011). Cigarette smoking and risk of histological subtypes of epithelial ovarian cancer in the EPIC cohort study.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gram, I., et al. Cigarette Smoking and Risk of Histological Subtypes of Epithelial Ovarian Cancer in the EPIC Cohort Study. 2011.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gram, I., et al. Cigarette Smoking and Risk of Histological Subtypes of Epithelial Ovarian Cancer in the EPIC Cohort Study. 2011.