APA (7th ed.) Citation

Hirvonen, R. A. (1951). The motions of moon and sun at the solar eclipse of 1947, May 20th. Valtineuvoston Kirjapaino.

Chicago Style (17th ed.) Citation

Hirvonen, R. A. The Motions of Moon and Sun at the Solar Eclipse of 1947, May 20th. Helsinki: Valtineuvoston Kirjapaino, 1951.

MLA (9th ed.) Citation

Hirvonen, R. A. The Motions of Moon and Sun at the Solar Eclipse of 1947, May 20th. Valtineuvoston Kirjapaino, 1951.

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