Linguaphone Conversational Course : students' instructions. Instructions for adult students, children from 9 to 15 years of age, children up to about 9 years of age

MLA

Wessen, Elias, and E Wellander. Linguaphone Conversational Course : Students' Instructions. Instructions for Adult Students, Children From 9 to 15 Years of Age, Children Up to About 9 Years of Age. London: Linguaphone Institute, 1920.

APA

Wessen, E., & Wellander, E. (1920). Linguaphone Conversational Course : students' instructions. Instructions for adult students, children from 9 to 15 years of age, children up to about 9 years of age. London: Linguaphone Institute.

Chicago

Wessen, Elias, and E. Wellander. Linguaphone Conversational Course: Students' Instructions. Instructions for Adult Students, Children From 9 to 15 Years of Age, Children Up to about 9 Years of Age. London: Linguaphone Institute, 1920.