Style de citation APA (7e éd.)
Eckersley, C. (1967). Essential English for Foreign Students: Book One. Foreign Languages Press.
Style de citation Chicago (17e éd.)
Eckersley, C.E. Essential English for Foreign Students: Book One. Sofia: Foreign Languages Press, 1967.
Style de citation MLA (9e éd.)
Eckersley, C.E. Essential English for Foreign Students: Book One. Foreign Languages Press, 1967.
Attention : ces citations peuvent ne pas être correctes à 100%.