Esperanto in 30 lessons /
edited in collaboration with the British Esperanto Association (Inc.).
APA Citation
Linguaphone Institue., British Esperanto Association. (1925). Esperanto in 30 lessons. London: Linguaphone Institute : wholesale trade agent, L.B. Hill.
MLA Citation
Linguaphone Institue, and British Esperanto Association. Esperanto In 30 Lessons. London: Linguaphone Institute : wholesale trade agent, L.B. Hill, 1925.
Warning: These citations may not always be complete (especially for serials).