APA (7th ed.) Citation

Heydon Sir, C. (1650). An astrological discourse... in justification of the validity of astrology, etc.

Chicago Style (17th ed.) Citation

Heydon Sir, Christopher. An Astrological Discourse... in Justification of the Validity of Astrology, Etc. London, 1650.

MLA (9th ed.) Citation

Heydon Sir, Christopher. An Astrological Discourse... in Justification of the Validity of Astrology, Etc. 1650.

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