APA (7th ed.) Citation

Kirk, K. M., Hickie, I. B., & Martin, N. G. (1999). Fatigue as related to anxiety and depression in a community-based sample of twins aged over 50. Springer.

Chicago Style (17th ed.) Citation

Kirk, K. M., I. B. Hickie, and N. G. Martin. Fatigue as Related to Anxiety and Depression in a Community-based Sample of Twins Aged over 50. Springer, 1999.

MLA (9th ed.) Citation

Kirk, K. M., et al. Fatigue as Related to Anxiety and Depression in a Community-based Sample of Twins Aged over 50. Springer, 1999.

Warning: These citations may not always be 100% accurate.