Cita APA (7th ed.)

SURYADIPUTRA, W. (1992). Writing upper - intermediate: Study guide. LP3B UT and Oxford english.

Cita Chicago (17th ed.)

SURYADIPUTRA, Wendy. Writing Upper - Intermediate: Study Guide. Jakarta: LP3B UT and Oxford english, 1992.

Cita MLA (9th ed.)

SURYADIPUTRA, Wendy. Writing Upper - Intermediate: Study Guide. LP3B UT and Oxford english, 1992.