TESSA is hosted and supported by The Open University, UK. The TESSA materials have been authored primarily by academics from across Africa.

We are grateful to the following authors for their contribution:

Amani Abdel Gafar, Ojerinde Abimbola, Joseph K. Aboagye, Peter Acheampong, Méléwohégbé Ayawo Adalan,  K.R. Adeboye, Mensah Agbefou, K. Richard Agbogan,  Florence Aguti, Janet Aguti, Jessica Aguti, Josephine Osei Agyekum, Margaret Aina, Assion Akakpo, Comlan Ogouki Aloufa, Kao Mollah Alpha, Ayité Ayi-Koutou Amavi, Ablavi Amegbleame, Jophus Anamuah-Mensah, Kafui Aryee, Kwame Asante, Kokou Atokou, Emmanuel Babyegeya, Abdul Badmus, Damba Bonfoh, Elizabeth Botha, Chanda Chishimba, Emmanuel Ndan Danladi, Manamédénou Dao Dao, Y. Dotsè Dara-Ahato, Gareth Dart, Michele Deane, Jane Devereux, Charles Benhard Dueda, Kossi Anani Edjoh, Dora Edu-Baundoh, Paoulan Efalou, Anani Goobyh, Carolyn Halliday, Johan Hendrikz, Amam Heyou, Inekwe Onwuegbu Israel, Nick James, Alan Kenyon, Fred Keraro, Lydia Kimaryo, Adewale Kolawole, Amivi-Cra Komlan, Afi Koumaglo, Kodzo Knoffon, Essi Kpogli, Jenny Leach, Harriet Marshall, Elias Oupa Mashile, Margaret Matthews, Ian Moll, Bob Moon, Cornelia Muganda, Tomfèi Nabiliwa, Ekpunobi Edith Nwabugo, Mthunzi Nxawe, Abdul Ogunlade, Festus Ogunlade, Mobolaji Ogunsanya, Daniel Okot, Lamto Oladokoun, Isaac Olaofe, Oloyede Olufunmilayo, Prince Olude, Anthonia Ekanibe Onuorah, Gilbert Onwu, Charles Opolot-Okurut, Nur Elhuda Isam Eldin Osman, Aron Otto, Anao Pansoue, Tom Power, Yvonne Reed, Neville Reuben, Alison Mead Richardson, Keith Ricketts, James Rutebuka, Erasme Rwanamiza, Ali M. ElJack Salih, Abra Sewonu, Naledi Mbude Shale, Hanna Simpassa, Mohammed Hassan Ahmed Sinada, Simon Smith, Kodjo Donkor Taale, Margaret Tabone, Koami Tameklo, Paka Tanang, Kossi Edoh Ayétan Tchao, Jayshree Thakrar, Komi Tombozou Tiou, Eugenia Ukpo, Abdurrahman Umar, Tessa Welch, Freda Wolfenden, Zoulikha Zaidi

Every effort has been made to trace all the copyright owners, but if any have been inadvertently overlooked, we will be pleased to make the necessary arrangements at the first opportunity.