APA (7th ed.) Citation

Campbell, H., & Hunkinks-Hallinan, H. (2018). Six Point Group: Correspondence: Campbell, Harriet. Adam Matthew Digital.

Chicago Style (17th ed.) Citation

Campbell, Harriet, and Hazel Hunkinks-Hallinan. Six Point Group: Correspondence: Campbell, Harriet. Marlborough, Wiltshire: Adam Matthew Digital, 2018.

MLA (9th ed.) Citation

Campbell, Harriet, and Hazel Hunkinks-Hallinan. Six Point Group: Correspondence: Campbell, Harriet. Adam Matthew Digital, 2018.

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