Gratier, T., Hazzard, E., Spencer, P., Gratier, T., Hazzard, E. and Spencer, P. (2015) Open Layers 3: Beginner’s Guide.
Chicago Manual of Style 17th edition (full note)Gratier, Thomas, Erik Hazzard, Paul Spencer, Thomas Gratier, Erik Hazzard, and Paul Spencer. Open Layers 3: Beginner’s Guide.
American Psychological Association 7th editionGratier, T., Hazzard, E., Spencer, P., Gratier, T., Hazzard, E., & Spencer, P. (2015). Open Layers 3: Beginner’s Guide.
Modern Language Association 9th editionGratier, T., E. Hazzard, P. Spencer, T. Gratier, E. Hazzard, and P. Spencer. Open Layers 3: Beginner’s Guide. 2015.
ISO-690 (author-date, Deutsch)GRATIER, Thomas, Erik HAZZARD, Paul SPENCER, Thomas GRATIER, Erik HAZZARD and Paul SPENCER, 2015. Open Layers 3: Beginner’s Guide
Warning: These citations may not always be 100% accurate.