Sunderland, P., Whetten, E. Objective Proficiency. Cambridge: Cambridge Univ. Press, 2013 120 p. : ill. 978-1-107-61920-3.
Sunderland, P., Whetten, E. Objective Proficiency. Cambridge: Cambridge Univ. Press, 2013 120 p. : ill. 978-1-107-61920-3.
Sunderland, P., Whetten, E. (2013) Objective Proficiency, Cambridge: Cambridge Univ. Press 120 p. : ill. 978-1-107-61920-3.
Sunderland, P., & Whetten, E. (2013). Objective Proficiency. Worbkbook with answers : C2 English Profile. Cambridge: Cambridge Univ. Press, 120 p. : ill.
Sunderland P, Whetten E. Objective Proficiency: Worbkbook with answers : C2 English Profile. Cambridge: Cambridge Univ. Press; 2013. p. 120 p. : ill. ISBN: 978-1-107-61920-3.
