Lewis, M., & Kelly, G. (1986). 20 activities for developing managerial effectiveness: A management skills training manual. Gower.
Citação do estilo Chicago (17ª ed.)Lewis, Mike, e Graham Kelly. 20 Activities for Developing Managerial Effectiveness: A Management Skills Training Manual. Aldershot, Hants, England: Gower, 1986.
Citação MLA (9ª ed.)Lewis, Mike, e Graham Kelly. 20 Activities for Developing Managerial Effectiveness: A Management Skills Training Manual. Gower, 1986.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.