Dummet, P., Hughes, J., & Stephenson, H. (2014). Life: Advanced. Student's Book (1a. ed.). National Geographic Learning.
Citace podle Chicago (17th ed.)Dummet, Paul, John Hughes, a Helen Stephenson. Life: Advanced. Student's Book. 1a. ed. Hampshire: National Geographic Learning, 2014.
Citace podle MLA (9th ed.)Dummet, Paul, et al. Life: Advanced. Student's Book. 1a. ed. National Geographic Learning, 2014.
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