Petkutė, R. (2012). English for sustainable environment: Study book. Technika.
Cita Chicago (17th ed.)Petkutė, Rūta. English for Sustainable Environment: Study Book. Vilnius: Technika, 2012.
Cita MLA (9th ed.)Petkutė, Rūta. English for Sustainable Environment: Study Book. Technika, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.