APA-viite (7. p.)

ETS. (2016). OFFICIAL TOEFL iBT TESTS VOLUME 2 (WITH CD) (2ND ED.). MC GRAW HILL.

Chicago-viite (17. p.)

ETS. OFFICIAL TOEFL IBT TESTS VOLUME 2 (WITH CD). 2ND ED. NEW DELHI: MC GRAW HILL, 2016.

MLA-viite (9. p.)

ETS. OFFICIAL TOEFL IBT TESTS VOLUME 2 (WITH CD). 2ND ED. MC GRAW HILL, 2016.