Cita APA (7th ed.)

Pennsylvania Dept of Public Instruction. (1963). Science in action. Dept. of Public Instruction.

Cita Chicago (17th ed.)

Pennsylvania Dept of Public Instruction. Science in Action. Harrisburg, Pa: Dept. of Public Instruction, 1963.

Cita MLA (9th ed.)

Pennsylvania Dept of Public Instruction. Science in Action. Dept. of Public Instruction, 1963.