APA citiranje

Lips, P., Gielen, E., & van Schoor, N. M. (2014). Vitamin D supplements with or without calcium to prevent fractures. Nature Publishing Group.

Citação norma Chicago

Lips, Paul, Evelien Gielen, and Natasja M. van Schoor. Vitamin D Supplements With or Without Calcium to Prevent Fractures. Nature Publishing Group, 2014.

MLA citiranje

Lips, Paul, Evelien Gielen, and Natasja M. van Schoor. Vitamin D Supplements With or Without Calcium to Prevent Fractures. Nature Publishing Group, 2014.