APA (7th ed.) Citation

Ruki, Olga, & Kuthan. (1992). The Encyclopedia of stars and planet. Ivy Leaf.

Chicago Style (17th ed.) Citation

Ruki, Olga, and Kuthan. The Encyclopedia of Stars and Planet. London: Ivy Leaf, 1992.

MLA (8th ed.) Citation

Ruki, et al. The Encyclopedia of Stars and Planet. Ivy Leaf, 1992.

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