abdelaal,, Z., Elassar, H., Fouad, N., Kamel, N. (2020). The Role of Quality Assurance Certificates in the success of Tour Operator's Work in Egypt. test, 17(1), 1-25. doi: 10.21608/thalexu.2020.27812.1006
Zeinab yousry abdelaal,; Hanan Elassar; Nashwa Fouad; Noha Kamel. "The Role of Quality Assurance Certificates in the success of Tour Operator's Work in Egypt". test, 17, 1, 2020, 1-25. doi: 10.21608/thalexu.2020.27812.1006
abdelaal,, Z., Elassar, H., Fouad, N., Kamel, N. (2020). 'The Role of Quality Assurance Certificates in the success of Tour Operator's Work in Egypt', test, 17(1), pp. 1-25. doi: 10.21608/thalexu.2020.27812.1006
abdelaal,, Z., Elassar, H., Fouad, N., Kamel, N. The Role of Quality Assurance Certificates in the success of Tour Operator's Work in Egypt. test, 2020; 17(1): 1-25. doi: 10.21608/thalexu.2020.27812.1006