Cita APA (7a ed.)

Feigl, F., & Oesper, R. E. (1954). Spot Tests (4th. ed. rev.). Elsevier.

Cita Chicago Style (17a ed.)

Feigl, Fritz, y Ralph E. Oesper. Spot Tests. 4th. ed. rev. Amsterdam: Elsevier, 1954.

Cita MLA (8a ed.)

Feigl, Fritz, y Ralph E. Oesper. Spot Tests. 4th. ed. rev. Elsevier, 1954.