Blockhouse (English Wikipedia)

Lord, Louis E.; Frantz, M. Alison; Roebuck, Carl (April–June 1941). "Blockhouses in the Argolid" (PDF). Hesperia. 10 (2): 93–112. JSTOR 146534. Retrieved 10 March 2022.

books.google.com (Global: 3^rd place; English: 3^rd place)

Spence, W. Jerome D.; Spence, David L. (1900). A History of Hickman County, Tennessee. Southern Historical Press. p. 271. ISBN 978-0-89308-242-0. {{cite book}}: ISBN / Date incompatibility (help)
Morrison, Hugh (1 January 1987). Early American Architecture: From the First Colonial Settlements to the National Period. Courier Corporation. p. 156. ISBN 978-0-486-25492-0.
For the difference between blockhouses and bunkers see Schneider & Kitchen 2002, p. 87, BACM Research 2009, p. 209, Davis 2007, p. 290 Schneider, Richard Harold; Kitchen, Ted (2002), Planning for crime prevention: a transatlantic perspective, RTPI library series, vol. 3 (illustrated ed.), Routledge, p. 87, ISBN 978-0-415-24136-6 BACM Research (2009), Vietnam War After Action Reports, BACM Research, pp. 263 Davis, Tracy C. (2007), Stages of emergency: Cold War nuclear civil defense (illustrated ed.), Duke University Press, p. 290, ISBN 978-0-8223-3970-0

"A Review Of The Defence of Britain Project". Report. Archived from the original on 23 November 2007. Retrieved 30 May 2006.

Hanslow, Mike. "Blockhouses of the Boer War". Archived from the original on 10 October 2017. Retrieved 9 October 2017.

"Definition of a Blockhouse". Archived from the original on 5 June 2011. Retrieved 28 January 2010.
"Blockhouse dates". Archived from the original on 5 June 2011. Retrieved 28 January 2010.
"Blockhouse general description". Archived from the original on 5 June 2011. Retrieved 28 January 2010.

Lord, Louis E.; Frantz, M. Alison; Roebuck, Carl (April–June 1941). "Blockhouses in the Argolid" (PDF). Hesperia. 10 (2): 93–112. JSTOR 146534. Retrieved 10 March 2022.

Spiteri, Stephen C. (2010). "Illustrated Glossary of Terms used in Military Architecture". ARX Supplement. MilitaryArchitecture.com: 637. Archived from the original on 3 June 2017. Retrieved 2 May 2016.
Spiteri, Stephen C. (12 September 2014). "ARX – Hospitaller Coastal Batteries". MilitaryArchitecture.com. Archived from the original on 8 September 2018.
Spiteri, Stephen C. (10 April 2010). "18th Century Hospitaller Coastal Batteries". MilitaryArchitecture.com. Archived from the original on 20 June 2016.

Tomlinson, Richard. "Britain's Last Castles – Masonry Blockhouses of the South African War, 1899–1902". Military History Journal. 10 (6). The South African Military History Society. Retrieved 14 February 2009.

Spiteri, Stephen C. (2010). "Illustrated Glossary of Terms used in Military Architecture". ARX Supplement. MilitaryArchitecture.com: 637. Archived from the original on 3 June 2017. Retrieved 2 May 2016.
"Definition of a Blockhouse". Archived from the original on 5 June 2011. Retrieved 28 January 2010.
"Blockhouse dates". Archived from the original on 5 June 2011. Retrieved 28 January 2010.
"Blockhouse general description". Archived from the original on 5 June 2011. Retrieved 28 January 2010.
Spiteri, Stephen C. (12 September 2014). "ARX – Hospitaller Coastal Batteries". MilitaryArchitecture.com. Archived from the original on 8 September 2018.
Spiteri, Stephen C. (10 April 2010). "18th Century Hospitaller Coastal Batteries". MilitaryArchitecture.com. Archived from the original on 20 June 2016.
Hanslow, Mike. "Blockhouses of the Boer War". Archived from the original on 10 October 2017. Retrieved 9 October 2017.
"A Review Of The Defence of Britain Project". Report. Archived from the original on 23 November 2007. Retrieved 30 May 2006.