APA Citation

Stevens, F. S., & Stevens, F. S. (1915). 291 has weight and direction. Camera work, 47, p. 30.

Chicago Style Citation

Stevens, Frances Simpson, and Frances Simpson Stevens. "291 Has Weight and Direction." Camera Work 47 (1915): 30.

MLA Citation

Stevens, Frances Simpson, and Frances Simpson Stevens. "291 Has Weight and Direction." Camera Work 47 (1915): 30.

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