APA (7th ed.) Citation

Sison, C. F. (1977). Relations between perceived problem difficulties and scores in problem solving in mathematics.

Chicago Style (17th ed.) Citation

Sison, Corazon Frial. Relations Between Perceived Problem Difficulties and Scores in Problem Solving in Mathematics. 1977.

MLA (9th ed.) Citation

Sison, Corazon Frial. Relations Between Perceived Problem Difficulties and Scores in Problem Solving in Mathematics. 1977.

Warning: These citations may not always be 100% accurate.