(1996) Principles for the Recording of Monuments, Groups of Buildings and Sites, Text ratified by the 11th ICOMOS General Assembly, Sofia, Bulgaria, 5-9 October 1996.

(2001) HABS/HAER Photographs: Specification and Guidlines. U.S. Department of the Interior, National Park Service.

Bryan, P., Blake, B. & Bedford, J. (2009) Metric Survey Specifications for Cultural Heritage. English Heritage.

D’Ayala, D., & Smars, P. (2003) Minimum requirements for metric use of non-metric photographic documentation, University of Bath.

Letellier, R. (2007) Recording, Documentation, and Information Management for the Conservation of Heritage Places, Volume I: Guiding Principles, The Getty Conservation Institue, Los Angeles.

Salma, C. C. 1980. Manual of Photogrammetry, 4th ed., American Society of Photogrammetry, Falls Church, Virginia.

Waldhäusl, P. & Ogleby, C. (1994) 3×3-Rules for Simple Photogrammetric Documentation of Architecture, International Archives of Photogrammetry and Remote Sensing, Volume XXX, Part 5, Melbourne, 1994, pp. 426-429.

Other helpful texts

Eppich, R., & Chabbi, A. (2007). Recording, Documentation, and Information Management for the Conservation of Heritage Places, Volume II: Illustrated Examples, The Getty Conservation Institute, Los Angeles. http://www.getty.edu/conservation/publications/pdf_publications/recordim.html

Grussenmeyer, P., Hanke, K., & Streilein, A. (2002) ‘Architectural photogrammetry’ in (eds. M. Kasser and Y. Egels,) Digital Photogrammetry pp. 300-339. Taylor & Francis. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.124.1597&rep=rep1&type=pdf