APA

Callaway R. M., Brooker R. W., Choler P., Kikvidze Z., Lortie C. J., Michalet R., Paolini L., Pugnaire F. I., Newingham B., Aschehoug E. T., Armas C., Kikodze D. & Cook B. J. (20020718). Positive interactions among alpine plants increase with stress. : Nature.

Chicago

Callaway Ragan M, Brooker R W, Choler Philippe, Kikvidze Zaal, Lortie Christopher J, Michalet Richard, Paolini Leonardo, Pugnaire Francisco I, Newingham Beth, Aschehoug Erik T, Armas Cristina, Kikodze David and Cook Bradley J. 20020718. Positive interactions among alpine plants increase with stress. : Nature.

Harvard

Callaway R. M., Brooker R. W., Choler P., Kikvidze Z., Lortie C. J., Michalet R., Paolini L., Pugnaire F. I., Newingham B., Aschehoug E. T., Armas C., Kikodze D. and Cook B. J. (20020718). Positive interactions among alpine plants increase with stress. : Nature.

MLA

Callaway Ragan M, Brooker R W, Choler Philippe, Kikvidze Zaal, Lortie Christopher J, Michalet Richard, Paolini Leonardo, Pugnaire Francisco I, Newingham Beth, Aschehoug Erik T, Armas Cristina, Kikodze David and Cook Bradley J. Positive interactions among alpine plants increase with stress. : Nature. 20020718.