APA (7th ed.) Citation

Ford, L. S. (2001). Why only two? Why not three? Process studies, 30(1), 101-111.

Chicago Style (17th ed.) Citation

Ford, Lewis S. "Why Only Two? Why Not Three?" Process Studies 30, no. 1 (2001): 101-111.

MLA (9th ed.) Citation

Ford, Lewis S. "Why Only Two? Why Not Three?" Process Studies, vol. 30, no. 1, 2001, pp. 101-111.

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