APA (7th ed.) Citation

Rukl. (1979). The amateur astronomer. Octopus Books.

Chicago Style (17th ed.) Citation

Rukl. The Amateur Astronomer. London: Octopus Books, 1979.

MLA (8th ed.) Citation

Rukl. The Amateur Astronomer. Octopus Books, 1979.

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