APA (7th ed.) Citation

Gaposchkin, E. M. (1972). Empirical data and the variance-covariance matrix for the 1969 Smithsonian Standard Earth (II). Smithsonian Institution Astrophysical Observatory.

Chicago Style (17th ed.) Citation

Gaposchkin, E. M. Empirical Data and the Variance-covariance Matrix for the 1969 Smithsonian Standard Earth (II). Cambridge, Mass.: Smithsonian Institution Astrophysical Observatory, 1972.

MLA (9th ed.) Citation

Gaposchkin, E. M. Empirical Data and the Variance-covariance Matrix for the 1969 Smithsonian Standard Earth (II). Smithsonian Institution Astrophysical Observatory, 1972.