Sund, R. B., & Picard, A. J. (1972). Behavioral objectives and evaluational measures: Science and mathematics. Merrill.
Lua i Stíl Chicago (17ú heag.)Sund, Robert B., agus Anthony J. Picard. Behavioral Objectives and Evaluational Measures: Science and Mathematics. Columbus, Ohio: Merrill, 1972.
Lua MLA (8ú heag.)Sund, Robert B., agus Anthony J. Picard. Behavioral Objectives and Evaluational Measures: Science and Mathematics. Merrill, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.