APA
(2015). ECHOES, Integrated English Arts and Skills. Manila: St. Augustine Publications, Inc.
Chicago
2015. ECHOES, Integrated English Arts and Skills. Manila: St. Augustine Publications, Inc.
Harvard
(2015). ECHOES, Integrated English Arts and Skills. Manila: St. Augustine Publications, Inc.
MLA
ECHOES, Integrated English Arts and Skills. Manila: St. Augustine Publications, Inc. 2015.