APA (7th ed.) Citation

Roylance, F. D. (1998). Astronomers: Up to two-thirds of stars, galaxies hidden. Today.

Chicago Style (17th ed.) Citation

Roylance, Frank D. "Astronomers: Up to Two-thirds of Stars, Galaxies Hidden." Today 1998.

MLA (9th ed.) Citation

Roylance, Frank D. "Astronomers: Up to Two-thirds of Stars, Galaxies Hidden." Today, 1998.

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