Conservation Research.

MLA

Merrill, Ross M, et al. Conservation Research. Washington: National Gallery of Art (Washington), 1993.

APA

Merrill, R. M, Fisher, S., Fletcher, S., & De La Rie, R. (1993). Conservation Research. Washington: National Gallery of Art (Washington).

Chicago

Merrill, Ross M., Sarah Fisher, Shelley Fletcher, and Rene De La Rie. Conservation Research. Washington: National Gallery of Art (Washington), 1993.