APA引文

Krapp, K. M. (1998). Notable twentieth-century scientists: Supplement. Gale Research.

Chicago Style (17th ed.) Citation

Krapp, Kristine M. Notable Twentieth-century Scientists: Supplement. Detroit: Gale Research, 1998.

MLA引文

Krapp, Kristine M. Notable Twentieth-century Scientists: Supplement. Gale Research, 1998.