APA (7. basım) Alıntı

Scheffer, J. (1975). The Progressive in English. North-Holland.

Chicago Style (17. basım) Atıf

Scheffer, Johannes. The Progressive in English. Amsterdam: North-Holland, 1975.

MLA (9th ed.) Atıf

Scheffer, Johannes. The Progressive in English. North-Holland, 1975.