APA (7th ed.) Citation

Kalaja, P., & Ölander, V. R. (1970). Astronomical determinations of latitude and longitude in 1949 - 1958.

Chicago Style (17th ed.) Citation

Kalaja, Pentti, and V. R. Ölander. Astronomical Determinations of Latitude and Longitude in 1949 - 1958. Helsinki, 1970.

MLA (9th ed.) Citation

Kalaja, Pentti, and V. R. Ölander. Astronomical Determinations of Latitude and Longitude in 1949 - 1958. 1970.

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