Cita APA (7th ed.)

Santos, M. G. C. (1977). Development and tryout of value clarification lessons in high school science II (Biology).

Cita Chicago (17th ed.)

Santos, Ma. Gracia C. Development and Tryout of Value Clarification Lessons in High School Science II (Biology). 1977.

Cita MLA (9th ed.)

Santos, Ma. Gracia C. Development and Tryout of Value Clarification Lessons in High School Science II (Biology). 1977.