APA
Krupp R. A., . (1990). A primer on theological research tools. Lanham, MD: University Press of America.
Chicago
Krupp Robert Allen, . 1990. A primer on theological research tools. Lanham, MD: University Press of America.
Harvard
Krupp R. A., . (1990). A primer on theological research tools. Lanham, MD: University Press of America.
MLA
Krupp Robert Allen, . A primer on theological research tools. Lanham, MD: University Press of America. 1990.