Gaya APA

Tumijo, S, M, D, S, R, D. (2009). Successful Strategies for TOEFL . : Pustaka Widyatama.

Gaya MLA

Tumijo, S.Pd.,, M.Hum,, Drs., Slamet, Riyanto,, Dkk.. "Successful Strategies for TOEFL". : Pustaka Widyatama, 2009. .