Declerck, Renaat and Reed, Susan. "537-538". Conditionals: A Comprehensive Empirical Analysis, Berlin, Boston: De Gruyter Mouton, 2001, pp. 537-538. https://doi.org/10.1515/9783110851748.bm
Declerck, R. & Reed, S. (2001). 537-538. In Conditionals: A Comprehensive Empirical Analysis (pp. 537-538). Berlin, Boston: De Gruyter Mouton. https://doi.org/10.1515/9783110851748.bm
Declerck, R. and Reed, S. 2001. 537-538. Conditionals: A Comprehensive Empirical Analysis. Berlin, Boston: De Gruyter Mouton, pp. 537-538. https://doi.org/10.1515/9783110851748.bm
Declerck, Renaat and Reed, Susan. "537-538" In Conditionals: A Comprehensive Empirical Analysis, 537-538. Berlin, Boston: De Gruyter Mouton, 2001. https://doi.org/10.1515/9783110851748.bm
Declerck R, Reed S. 537-538. In: Conditionals: A Comprehensive Empirical Analysis. Berlin, Boston: De Gruyter Mouton; 2001. p.537-538. https://doi.org/10.1515/9783110851748.bm