APA (7th ed.) Citation

Houle, F. (1965). Galaxies nuclei and quasars. Heinemann.

Chicago Style (17th ed.) Citation

Houle, Fred. Galaxies Nuclei and Quasars. London: Heinemann, 1965.

MLA (8th ed.) Citation

Houle, Fred. Galaxies Nuclei and Quasars. Heinemann, 1965.

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