Gaya APA

Tan, Sharon. (2008). O Level Biology Workout Structured Questions . Singapura: Pearson Education South Asia.

Gaya Chicago

Tan, Sharon. O Level Biology Workout Structured Questions. Singapura: Pearson Education South Asia, 2008. Printed Book.

Gaya MLA

Tan, Sharon. O Level Biology Workout Structured Questions. Singapura: Pearson Education South Asia, 2008. Printed Book.

Gaya Turabian

Tan, Sharon. O Level Biology Workout Structured Questions. Singapura: Pearson Education South Asia, 2008. Printed Book.