APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.