Cita APA (7a ed.)

Lucas, B., & Spencer, E. (2018). Developing tenacity: Teaching learners how to persevere in the face of difficulty. Crown House Publishing Limited.

Cita Chicago Style (17a ed.)

Lucas, Bill, y Ellen Spencer. Developing Tenacity: Teaching Learners How to Persevere in the Face of Difficulty. Bancyfelin: Crown House Publishing Limited, 2018.

Cita MLA (9a ed.)

Lucas, Bill, y Ellen Spencer. Developing Tenacity: Teaching Learners How to Persevere in the Face of Difficulty. Crown House Publishing Limited, 2018.