APA引文

Armstrong, C. G., & Gardner, D. L. (1977). Thickness and distribution of human femoral head articular cartilage. Changes with age.

Citação norma Chicago

Armstrong, C G., and D L. Gardner. Thickness and Distribution of Human Femoral Head Articular Cartilage. Changes With Age. 1977.

MLA引文

Armstrong, C G., and D L. Gardner. Thickness and Distribution of Human Femoral Head Articular Cartilage. Changes With Age. 1977.

警告：這些引文格式不一定是100％准確.