Collin, P. English-Bulgarian study dictionary. Пловдив: Летера, 2004 720 с. 954-516-521-9.
Collin, P. English-Bulgarian study dictionary. Пловдив: Летера, 2004 720 с. 954-516-521-9.
Collin, P. (2004) English-Bulgarian study dictionary, Пловдив: Летера 720 с. 954-516-521-9.
Collin, P. (2004). English-Bulgarian study dictionary. Helping you study, write, speak and understand English. Пловдив: Летера, 720 с.
Collin P. English-Bulgarian study dictionary: Helping you study, write, speak and understand English. Пловдив: Летера; 2004. p. 720 с. ISBN: 954-516-521-9.