Recumbent stone circle (English Wikipedia)

Ruggles, Clive L. N. (2005). Ancient Astronomy: An Encyclopedia of Cosmologies and Myth. ABC-CLIO. ISBN 978-1-85109-477-6.
Darvill, Timothy (27 June 2013). "Monuments and Monumentality in Bronze Age Europe". In Fokkens, Harry; Harding, Anthony (eds.). The Oxford Handbook of the European Bronze Age. Oxford University Press. p. 151. ISBN 978-0-19-957286-1.
Burl, Aubrey (2005). Prehistoric Astronomy and Ritual. Osprey Publishing. pp. 44–5. ISBN 978-0-7478-0614-1.
Hadingham, Evan (1985). Early Man and the Cosmos. University of Oklahoma Press. pp. 64–7. ISBN 978-0-8061-1919-9. Archived from the original on 2020-10-30. Retrieved 2020-10-30.

harvard.edu

Ruggles, C.L.N.; Burl, H.A.W. (1985). "A New Study of the Aberdeenshire Recumbent Stone Circles, 2: Interpretation". Archaeoastronomy: Supplement to the Journal for the History of Astronomy. 16 (8): 25–60. Bibcode:1985JHAS...16...25R.

Ruggles, C.L.N.; Burl, H.A.W. (1985). "A New Study of the Aberdeenshire Recumbent Stone Circles, 2: Interpretation". Archaeoastronomy: Supplement to the Journal for the History of Astronomy. 16 (8): 25–60. Bibcode:1985JHAS...16...25R.

Wilson, Michael (11 October 2006). "Cork-Kerry type Axial Stone Circles". megalithic sites + whole horizon analysis = prehistoric horizon calendars. Archived from the original on 29 September 2019. Retrieved 24 February 2020.

"Recumbent Stone Circles". Aberdeenshire Council. Archived from the original on 9 May 2015. Retrieved 9 May 2015.
Wilson, Michael (11 October 2006). "Cork-Kerry type Axial Stone Circles". megalithic sites + whole horizon analysis = prehistoric horizon calendars. Archived from the original on 29 September 2019. Retrieved 24 February 2020.
Hadingham, Evan (1985). Early Man and the Cosmos. University of Oklahoma Press. pp. 64–7. ISBN 978-0-8061-1919-9. Archived from the original on 2020-10-30. Retrieved 2020-10-30.
Bradley, Richard; Phillips, Tim; Arrowsmith, Sharon; Ball, Chris (2005). The Moon and the Bonfire: an investigation of three stone circles in north-east Scotland. Society of Antiquaries of Scotland. ISBN 0903903334. Archived from the original on 2020-10-21. Retrieved 2020-10-30. – available online Archived 2020-10-30 at the Wayback Machine