APA (7th ed.) Citation

Etherton, A. R. B. (1971). Contact: A secondary English course, book 1. Longman Malaysia Sdn. Berhad.

Chicago Style (17th ed.) Citation

Etherton, A. R. B. Contact: A Secondary English Course, Book 1. Kuala Lumpur: Longman Malaysia Sdn. Berhad, 1971.

MLA (9th ed.) Citation

Etherton, A. R. B. Contact: A Secondary English Course, Book 1. Longman Malaysia Sdn. Berhad, 1971.