APA (7th ed.) Citation

Claessen, H. J., & Claessen, H. J. (1978). Early state. Monton Pubs.

Chicago Style (17th ed.) Citation

Claessen, Henri J.M., and Henri J.M.;Skalnik Claessen. Early State. Monton Pubs, 1978.

MLA (9th ed.) Citation

Claessen, Henri J.M., and Henri J.M.;Skalnik Claessen. Early State. Monton Pubs, 1978.

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