APA (7th ed.) Citation

Abbot, C. G. (1955). Periodic solar variation. Smithsonian Inst.

Chicago Style (17th ed.) Citation

Abbot, Charles G. Periodic Solar Variation. Washington, DC: Smithsonian Inst, 1955.

MLA (9th ed.) Citation

Abbot, Charles G. Periodic Solar Variation. Smithsonian Inst, 1955.

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