APA (7th ed.) Citation

Linguaphone Institute. (1998). Linguaphone: English course. Linguaphone Institute.

Chicago Style (17th ed.) Citation

Linguaphone Institute. Linguaphone: English Course. Linguaphone Institute, 1998.

MLA (8th ed.) Citation

Linguaphone Institute. Linguaphone: English Course. Linguaphone Institute, 1998.

Warning: These citations may not always be 100% accurate.