APA (7th ed.) Citation

ANANTHAKRISHNAN, R. (1951). Intensity variation in sunspots. Nature, 168(4268), 291.

Chicago Style (17th ed.) Citation

ANANTHAKRISHNAN, R. "Intensity Variation in Sunspots." Nature 168, no. 4268 (1951): 291.

MLA (9th ed.) Citation

ANANTHAKRISHNAN, R. "Intensity Variation in Sunspots." Nature, vol. 168, no. 4268, 1951, p. 291.

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