Gaya APA

Manurung, Heldin. (1996). Efryday English Grammar & Exercise . Jakarta: Kesaint Blanc.

Gaya Chicago

Manurung, Heldin. Efryday English Grammar & Exercise. Jakarta: Kesaint Blanc, 1996. Text.

Gaya MLA

Manurung, Heldin. Efryday English Grammar & Exercise. Jakarta: Kesaint Blanc, 1996. Text.

Gaya Turabian

Manurung, Heldin. Efryday English Grammar & Exercise. Jakarta: Kesaint Blanc, 1996. Print.